Petah Tikva (Hebrew: פתח תקווה‎ [ˈpetaχ ˈtikva], lit. 'Opening of Hope'), also known as Em HaMoshavot (lit. 'Mother of the Moshavot'), is a city in the Central District of Israel, 10.6 km (6.6 mi) east of Tel Aviv. It was founded in 1878, mainly by Haredi Jews of the Old Yishuv, and became a permanent settlement in 1883 with the financial help of Baron Edmond de Rothschild.

In 2022, the city had a population of 255,387, being so the fifth-largest city in Israel. Its population density is approximately 6,277 inhabitants per square kilometre (16,260/sq mi). Its jurisdiction covers 35,868 dunams (~35.9 km or 15 sq mi). Petah Tikva is part of the Tel Aviv Metropolitan Area.

Petah Tikva takes its name (meaning "Door of Hope") from the biblical allusion in Hosea 2:15: "... and make the valley of Achor a door of hope." The Achor Valley, near Jericho, was the original proposed location for the town.

Tell Mulabbis, an archaeological mound in modern Petah Tikva, is an important archaeological site from the Yarkon River basin, with habitation remains from the Roman, Byzantine, Early Islamic, Crusader, Mamluk and Late Ottoman periods. The place was inhabited sporadically, and was known in Arabic as Mulabbis, and was the site of a Palestinian village of the same name, inhabited by the Abu Hamed al-Masri clan.

Petah Tikva was founded in 1878 by Jewish settlers from Europe, among them Yehoshua Stampfer, Moshe Shmuel Raab, Yoel Moshe Salomon, Zerach Barnett, and David Gutmann, as well as Lithuanian Rabbi Aryeh Leib Frumkin who built the first house. It was the first modern Jewish agricultural settlement in Ottoman Southern Syria (hence its nickname as "Mother of the Moshavot").

Originally intending to establish a new settlement in the Achor Valley, near Jericho, the settlers purchased land in that area. However, Abdülhamid II cancelled the purchase and forbade them from settling there, but they retained the name Petah Tikva as a symbol of their aspirations.

In 1878, the founders of Petah Tikva learned of the availability of land northeast of Jaffa near the village of Mulabes (or Umlabes). The land was owned by two Christian businessmen from Jaffa, Antoine Bishara Tayan and Selim Qassar, and was worked by some thirty tenant farmers. Tayan's property was the larger, some 8,500 dunams, but much of it was in the malarial swamp of the Yarkon Valley. Qassar's property, approximately 3,500 dunams, lay a few kilometers to the south of the Yarkon, away from the swampland. It was Qassar's that was purchased on July 30, 1878. Tayan's holdings were purchased when a second group of settlers, known as the Yarkonim, arrived in Petah Tikva the following year. Ottoman Sultan Abdul Hamid II allowed the purchase because of the poor quality of the land.

In a microhistorical anecdote of Petah Tikva, Yehuda Raab, one of the Hungarian settlers, recalls in his memoirs meeting a Baghdadi Jew, Daud abu Yusuf, who despite appearing as a Bedouin, announced “ana Israʾili,” I am Jewish, and recited the shema by way of proof. Yusuf, along with a Moroccan Jew from Jaffo, Yaʿqub bin Maymun Zirmati, was hired as a guard for colony; it was customary for European Jewish colonies to hire local Arab guards or in some cases Yemenite Jews. Both were Ottoman imperial subjects and were important cultural and linguistic go-betweens, for example in the horse and camel trade, from the world of the Ashkenazi Jewish colonists and that of the Eastern or Maghribi Jews, today called Mizrahi Jews.

A malaria epidemic broke out in 1880, forcing the abandonment of the settlements on both holdings by 1881 or 1882. Those who remained in the area moved south to Yehud. After Petah Tikva was reoccupied by Bilu immigrants in 1883, some of the original families returned. With funding for swamp drainage provided by Baron Edmond de Rothschild, the colony became more stable.

In March 1886, Arab peasants from Yahudiya attacked the Jewish colony, injuring 5, with one dying later, possibly due to aggravation of her preexisting condition. This was called the first violent clash in the Yishuv by Moshe Smilansky.

Upon learning that the Austrian post office in Jaffa wanted to open a branch in Petah Tikva, Yitzchak Goldenhirsch, an early resident, offered his assistance on condition that the Austrian consulate issued a Hebrew stamp and a special postmark for Petah Tikva. The stamp was designed by an unknown artist featuring a plow, green fields and a blossoming orange tree. The price was 14 paras (a Turkish coin) and displayed the name 'Petah Tikva' in Hebrew letters.

David Ben Gurion lived in Petah Tikva for a few months on his arrival in Palestine in 1906. It had a population of around 1000, half of them farmers. He found occasional work in the orange groves. But, he soon caught malaria and his doctor recommended he return to Europe. The following year, after moving to Jaffa, he set up a Jewish workers organisation in Petah Tikva.

During the Sinai and Palestine Campaign of World War I, Petah Tikva served as a refugee town for residents of Tel Aviv and Jaffa, following their exile by the Ottoman authorities. The town suffered heavily as it lay between the Ottoman and British fronts during the war.

In the early 1920s, industry began to develop in the Petah Tikva region. In 1921, Petah Tikva was granted local council status by the British authorities. In May 1921, Petah Tikva was the target of an Arab attack, which left four of its Jewish inhabitants dead–an extension of the Jaffa riots of 1921. In 1927, Petah Tikva concluded a local peace treaty with the Arabs living nearby; subsequently, Petah Tikva was untouched by the 1929 Palestine riots.

According to the 1922 census of Palestine conducted by the British Mandate authorities, Petah Tikva had a total population of 3,032: 3,008 Jews, 22 Muslims and 2 Orthodox Christians.

By the time the 1931 census was taken, the population had increased to 6,880 inhabitants in 1,688 houses. In 1937, it was recognized as a city. Its first mayor, Shlomo Stampfer, was the son of one of its founders, Yehoshua Stampfer.

Petah Tikva, a center of citrus farming, was considered by both the British government and the Jaffa Electric Company as a potentially important consumer of electricity for irrigation. The Auja Concession, which was granted to the Jaffa Electric Company on 1921, specifically referred to the relatively large Jewish settlement of Petah-Tikva. But, it was only in late 1929 that the company submitted an irrigation scheme for Petah-Tikva, and it was yet to be approved by the government in 1930.

In 1931, Ben Gurion wrote that Petah Tikva had 5000 inhabitants and employed 3000 Arab labourers.

In the 1930s, the pioneering founders of Kibbutz Yavneh from the Religious Zionist movement immigrated to the British Mandate of Palestine, settling near Petah Tikva on land purchased by a Jewish-owned German company. Refining the agricultural skills they learned in Germany, these pioneers began in 1941 to build their kibbutz in its intended location in the south of Israel, operating from Petah Tikva as a base.

After the 1948 Arab–Israeli War, Petah Tikva annexed all of the lands of the newly depopulated Palestinian village of Fajja. The city has suffered a series of terror attacks as a result of the ongoing regional conflict, including the bombing of a vegetable market in 1977, and three attacks during the Second Intifada: On May 27, 2002, a suicide bomber blew himself up at a small cafe outside a shopping mall, leaving two dead, including a baby; on December 25, 2003, a suicide bomber blew himself up at a bus stop near the Geha bridge, killing 4 civilians, and on February 5, 2006, a Palestinian got into a shuttle taxi, pulled out a knife, and began stabbing passengers killing two of them, but a worker from a nearby factory hit him with a log, subduing him.

After the creation of the State of Israel in 1948, several adjoining villages–Amishav and Ein Ganim to the east (named after the biblical village (Joshua 15:34)), Kiryat Matalon to the west, towards Bnei Brak, Kfar Ganim and Mahaneh Yehuda to the south and Kfar Avraham on the north–were merged into the municipal boundaries of Petah Tikva, boosting its population to 22,000.

As of 2018, with a population of over 240,000 inhabitants, Petah Tikva is the third most populous city in the Tel Aviv Metropolitan Area ("Gush Dan").

Petah Tikva is divided into 33 neighborhoods for municipal purposes.

Petah Tikva is the second-largest industrial sector in Israel after the northern city of Haifa. The industry is divided into three zones—Kiryat Aryeh (named after Arie Shenkar, founder and first president of the Manufacturers Association of Israel and a pioneer in the Israeli textile industry), Kiryat Matalon (named after Moshe Yitzhak Matalon), and Segula, and includes textiles, metalwork, carpentry, plastics, processed foods, tires and other rubber products, and soap.

Numerous high-tech companies and start-ups have moved into the industrial zones of Petah Tikva, which now house the Israeli headquarters for the Oracle Corporation, IBM, Intel, Alcatel-Lucent, ECI Telecom, and GlaxoSmithKline Pharmaceuticals. The largest data center in Israel, operated by the company TripleC, is also located in Petah Tikva. Furthermore, the Israeli Teva company, the world's largest generic drug manufacturer, is headquartered in Petah Tikva. One of Israel's leading food processing corporations, Osem opened in Petah Tikva in 1976 and has since been joined by the company's administrative offices, distribution center and sauce factory. Strauss is also based in Petach Tikva.

Over time, the extensive citrus groves that once ringed Petah Tikva have disappeared as real-estate developers acquired the land for construction projects. Many new neighborhoods are going up in and around Petah Tikva. A quarry for building stone is located east of Petah Tikva. As well as general hi-tech firms, Petah Tikva has developed a position as a base for many communications firms. As such, the headquarters of the Bezeq International international phone company is located in the Kiryat Matalon industrial zone as are those of the 012 Smile Internet Service Provider. The headquarters of Tadiran Telecom are in the Ramat Siv industrial zone. Arutz Sheva, the right wing Religious Zionist Israeli media network, operates an internet radio studio in Petah Tikva, where Arutz Sheva internet TV is located as well as the printing press for its B'Sheva newspaper.

The Israeli secret service, Shin Bet, has an interrogation facility in Petah Tikva.

Petah Tikva is served by a large number of buses. A large number of intercity Egged buses stop there, and the city has a network of local buses operated by the Kavim company. The Dan bus company operates lines to Ramat Gan, Bnei Brak and Tel Aviv. Petah Tikva's largest bus terminal is the Petah Tikva Central Bus Station (Tahana Merkazit), while other major stations are located near Beilinson Hospital and Beit Rivka.

Israel Railways maintains two suburban railroad stations in Segula and Kiryat Aryeh, in the northern part of the city. A central train station near the main bus station is envisioned as part of Israel Railways's long-term expansion plan.

There are eight taxi fleets based in Petah Tikva, and the city is bordered by three of the major vehicle arteries in Israel: Geha Highway (Highway 4) on the west, the Trans-Samaria Highway (Highway 5) on the north, and the Trans-Israel Highway (Highway 6) on the east.

Santiago Calatrava's bridge, a 50 metres (160 ft) long span Y-shaped cable-stayed pedestrian three-way bridge connecting Rabin Hospital to a shopping mall, a residential development and a public park. The structure is supported from a 29-metre (95 ft) high inclined steel pylon, which is situated where the three spans intersect. Light in construction, the bridge is built principally of steel with a glass-paved deck.

The Red Line of the Greater Tel Aviv rapid transit/light rail system connects Petah Tikva to Bnei Brak, Ramat Gan, Tel Aviv and Bat Yam. The Red Line of the Tel Aviv Light Rail system is split into 2 branches upon entrance to Petah Tikva. One branch travels to an underground terminal at the Kiryat Aryeh railway station, while the other continues east to the Petach Tikva Central Bus Station. The Light Rail's train depot is also located at Kiryat Aryeh. It was opened to service on August 18, 2023.

Petah Tikva's history of government goes back to 1880, when the pioneers elected a council of seven members to run the new colony. From 1880 to 1921, members of the council were David Meir Guttman, Yehoshua Stampfer, Ze'ev Wolf Branda, Abraham Ze'ev Lipkis, Yitzhak Goldenhirsch, Chaim Cohen-Rice, Moshe Gissin, Shlomo Zalman Gissin and Akiva Librecht. This governing body was declared a local council in 1921, and Petah Tikva became a city in 1937. Kadima, the political party founded by former Israeli prime minister Ariel Sharon, had its headquarters in Petah Tikva.

• Shlomo Zalman Gissin (1921)
• Pinchas Meiri (1922–1928)
• Shlomo Stampfer (1928–1937)
• Shlomo Stampfer (1938–1940)
• Yosef Sapir (1940–1950)
• Mordechai Krausman (1951)
• Pinchas Rashish (1951–1966)
• Yisrael Feinberg (1966–1978)
• Dov Tavori (1978–1989)
• Giora Lev (1989–1999)
• Yitzhak Ohayon (1999–2013)
• Uri Ohad (2013)
• Itzik Braverman (2013–2018)
• Rami Greenberg (2018–)

Petah Tikva is home to 300 educational institutions from kindergarten through high school, catering to the secular, religious and Haredi populations. There are over 43,000 students enrolled in these schools, which are staffed by some 2,400 teachers. Petah Tikva has seventeen public libraries, the main one located in the city hall building.

Some 70,000 Orthodox Jews live in Petah Tikva. The community of Petah Tikva is served by 300 synagogues, including the 120-year-old Great Synagogue, eight mikvaot (ritual baths) and two major Haredi yeshivot, Lomzhe Yeshiva and Or-Yisrael (founded by the Chazon Ish, Rabbi Avraham Yeshayahu Karelitz). Yeshivat Hesder Petah Tikva, a Modern Orthodox Hesder Yeshiva affiliated with the Religious Zionist movement, directed by Rabbi Yuval Cherlow, is also located in Petah Tikva. Additionally, Rav Michael Laitman, PhD in Philosophy and Kabbalah (see Bnei Baruch), daily leads 200-300 students and hundreds of thousands virtually (some estimates of up to 2 million) in the method of Kabbalah learned from his teacher Rav Baruch Ashlag, known as the RABASH.

Petah Tikva has two cemeteries: Segula Cemetery, east of the city, and Yarkon Cemetery, to the northeast.

Six hospitals are located in the city. The Rabin Medical Center Beilinson complex includes the Beilinson Medical Center, the Davidoff Oncologic Center, the Geha Psychiatric Hospital, the Schneider Pediatric Hospital and Tel Aviv University's Faculty of Medical Research. Other medical facilities in Petah Tikva are HaSharon Hospital, the Beit Rivka Geriatric Center, the Kupat Holim Medical Research Center and a private hospital, Ramat Marpeh, affiliated with Assuta Hospital. The Schneider Pediatric Center is one of the largest and most modern children's hospitals in the Middle East. In addition, there are many family health clinics in Petah Tikva as well as Kupat Holim clinics operated by Israel's health maintenance organizations. The city is also served by Mayanei Hayeshua Medical Center, a Haredi hospital in nearby Bnei Brak.

Petah Tikva's Independence Park includes a zoo at its northeastern edge, the Museum of Man and Nature, a memorial to the victims of the 1921 Arab riots, an archaeological display, Yad Labanim soldiers' memorial, a local history museum, a Holocaust museum and the Petah Tikva Museum of Art.

The main stadium in Petah Tikva is the 11,500-seat HaMoshava Stadium. Petah Tikva has two football teams – Hapoel Petah Tikva and Maccabi Petah Tikva. The local baseball team, the Petach Tikva Pioneers, played in the inaugural 2007 season of the Israel Baseball League. The league folded the following year. In 2014, Hapoel Petah Tikva's women's football team recruited five Arab-Israeli women to play on the team. One of them is now a team captain.

In November–December 2006 and May 2007, a salvage excavation was conducted at Khirbat Mulabbis, east of Moshe Sneh Street in Petah Tikva on behalf of the Israel Antiquities Authority. Four main strata (I–IV) were identified, dating to the Byzantine period (fourth–seventh centuries CE; Stratum IV), Early Islamic period (eighth–tenth centuries CE; Stratum III), Crusader period (twelfth–thirteenth centuries CE; Stratum II) and Ottoman period (Stratum I).

• Gila Almagor (born 1939), actress and author
• Yehuda Amichai (1924–2000), poet
• Zvi Arad (1942–2018), mathematician, acting president of Bar-Ilan University, president of Netanya Academic College
• Shlomo Baksht (born 1960), rabbi
• Hannah Barnett-Trager (1870–1943), wrote about early Petah Tikva
• Hanoch Bartov (1926-2016), author
• Mor Bulis (born 1996), tennis player
• Tal Burstein (born 1980), basketball player
• Moran Buzovski (born 1992), Olympic rhythmic gymnast
• Shmuel Dayan (1891–1968), Zionist activist
• Ofer Fabian (born 1962), footballer
• Israel Finkelstein (born 1949), archaeologist
• Dudu Fisher (born 1951), cantor and stage performer
• Gal Gadot (born 1985), actress and model
• Zehava Gal-On (born 1956), Meretz politician
• A. D. Gordon (1856–1922), Labor Zionist ideologue
• Tamar Gozansky (born 1940), politician
• Avraham Grant (born 1955), football coach
• Tzofit Grant (born 1964), television personality
• Tzachi Halevy (born 1975), film and television actor, singer
• Simcha Jacobovici (born 1953), filmmaker
• Doron Jamchi (born 1961), basketball player
• Nimrod Kamer (born 1981), poet and class warrior residing in London
• Yosef Karduner (born 1969), Hasidic singer-songwriter
• Haim Kaufman (1934–1995), Knesset member
• Yehoshua Kenaz (1937-2020), novelist
• Itzik Kol (1932–2007), television and movie producer
• Alona Koshevatskiy (born 1997), Olympic rhythmic gymnast
• Amnon Krauz (born 1952), Olympic swimmer
• Peretz Lavie (born 1949), expert in the psychophysiology of sleep and sleep disorders, 16th president of the Technion - Israel Institute of Technology, Dean of the Rappaport Faculty of Medicine
• Talya Lavie (born 1978), filmmaker
• Karina Lykhvar (born 1998), Olympic rhythmic gymnast
• Menachem Magidor (born 1946), mathematician, president of the Hebrew University of Jerusalem
• Samir Naqqash (1938–2004), Iraqi-Jewish author
• Zvi Nishri (Orloff) (1878–1973), physical education pioneer
• Uri Orbach (1960–2015), The Jewish Home politician, journalist and writer
• Elyakum Ostashinski (1909–1983), first mayor of Rishon LeZion
• Ravid Plotnik (born 1988), rapper
• Esther Raab (1894–1981), Hebrew author of prose and poetry
• Leah Rabin (1928–2000), wife of Israeli prime minister Yitzhak Rabin
• Neta Rivkin (born 1991), rhythmic gymnast
• Pnina Rosenblum (born 1954), actress, fashion model, businesswoman and politician
• Michal Rozin (born 1969), Meretz politician
• Rami Saari (born 1963), poet, translator and linguist
• Dan Shechtman (born 1941), winner of Nobel Prize for Chemistry
• Sigal Shachmon (born 1971), model, actress and television presenter
• Giora Spiegel (born 1947), football player and coach
• Nahum Stelmach (1936–1999), football player
• Pnina Tamano-Shata (born 1981), politician
• Moshe Gaon (born 1964), businessman and political consultant
• Kfir Tsafrir (born 1990), singer-songwriter, rapper and music producer.

Petah Tikva is referenced in the Tony Award-winning 2016 musical The Band's Visit as the main plot derives from a mix-up between the city and the fictional town of "Bet Hatikva" in the Negev Desert of southern Israel.

Petah Tikva is known for being a part of a satirical conspiracy theory which claims that it does not exist, much like the German Bielefeld conspiracy. "Free Petah Tikvah" became a meme during 2023.

Petah Tikva is twinned with:

• List of neighborhoods of Petah Tikva

• Municipality's official website Archived 2021-01-19 at the Wayback Machine
• Photos of Petah Tikva
• Cadastral map of Petah Tiqva, Ein Ganim, Al Mirr, Mahne Yehuda, 1934 - Eran Laor Cartographic Collection, The National Library of Israel