The Stedelijk Museum Amsterdam (Dutch pronunciation: [ˈsteːdələk myˈzeːjʏm ˌɑmstərˈdɑm]; Municipal Museum Amsterdam), colloquially known as the Stedelijk, is a museum for modern art, contemporary art, and design located in Amsterdam, Netherlands.

The 19th-century building was designed by Adriaan Willem Weissman and the 21st century wing with the current entrance was designed by Benthem Crouwel Architects. It is located at the Museum Square in the borough Amsterdam South, where it is close to the Van Gogh Museum, the Rijksmuseum, and the Concertgebouw.

The collection comprises modern and contemporary art and design from the early 20th century up to the 21st century. It features artists such as Vincent van Gogh, Wassily Kandinsky, Ernst Ludwig Kirchner, Marc Chagall, Henri Matisse, Jackson Pollock, Karel Appel, Andy Warhol, Willem de Kooning, Marlene Dumas, Lucio Fontana, and Gilbert & George.

In 2015, the museum had an estimated 675,000 visitors.

The Stedelijk Museum, Amsterdam, opened on 14 September 1895 as an initiative of the local authority and private individuals. The Dutch Neo-Renaissance style museum building was designed by Dutch architect Adriaan Willem Weissman [arz; de; nl] as part of a modernization project spearheaded by local citizens starting in 1850. The construction of the building was largely funded in 1890 by Sophia Adriana de Bruyn. Specifically, it was built under the Vereeniging tot het Vormen van een Verzameling van Hedendaagsche Kunst (VVHK, Society for the formation of a public collection of contemporary art), which was founded in 1874, to house de Bruyn's collection of art and antiques that she donated to the city along with a considerable sum of money. The Van Eeghen family also contributed to the construction costs and donated paintings from the collection of Christiaan Pieter van Eeghen. The building was constructed between 1891 and 1895 at Paulus Potterstraat, a short walking distance from the Rijksmuseum. The museum's original collection included militaria of the Amsterdam militia, Asiatic art, and artifacts from the Museum of Chronometry and the Medical-Pharmaceutical Museum.

In 1905, Cornelis Baard was appointed curator of the Stedelijk and promoted to museum director in 1920. During his time as curator, the local authority began building its own collection of modern art. The Great Depression in the Netherlands led to municipal cutbacks and an increased need for policy reviews in the first half of the 1930s. In 1932, a purchasing committee was established with two members from the VVHK and two from the local authority. These four figures oversaw all art purchases for the museum, notably works of Hague and Amsterdam Impressionism and pieces by international contemporaries.

The museum began actively acquiring art in 1930. In 1933, M.B.B. Nijkerk's collection of books came to the Stedelijk, which was later expanded to include aesthetic book design and typography. The Museum of Applied Art opened on the ground floor of the west wing on 15 December 1934. This collection included furniture, glass, pottery, and china, graphic design and posters, textiles, small sculptures and masks, batik, metalwork, and stained glass with an emphasis on Dutch work from around the turn of the century.

In 1936, David Röell, who had previously worked at the Rijksmuseum and was secretary of the VVHK, took over as museum director. Röell appointed Willem Sandberg as the new curator in January 1938. Sandberg eventually took over as director of the museum in 1945. By 1962, the VVHK handed over most of its collection, including works by George Hendrik Breitner, Paul Cézanne, Jean-Baptiste-Camille Corot, Gustave Courbet, Vincent van Gogh, and Johan Jongkind.

Under the direction of Sandberg, the Stedelijk started a department of applied art in 1945 and a department of prints and drawings in 1954. At the start of 1950, the Stedelijk also began to present modern music. In 1952, it became host to the newly established Nederlands Filmmuseum, and started showing films. The annex known as the Sandberg Wing was built in 1954 to accommodate experimental art. By 1956, a reading room, print room, a museum restaurant and garden, and a new auditorium for film screenings and musical performances were added. Sandberg acquired a group of works by Russian artist Kazimir Malevich in 1958. In the same year, Sandberg began acquiring photography for the museum's collection; the Stedelijk was the first western European museum for modern art to collect photography. The collection includes seminal photographers of both the Dutch and international avant-garde in the interbellum period (such as Erwin Blumenfeld, László Moholy-Nagy and Man Ray), an extensive selection of post-war Dutch photographers (including Eva Besnyö, Ed van der Elsken and Cas Oorthuys), artist portraits, photojournalism, and autonomous fine art photography from the 1970s onward.

During World War II, the Stedelijk collection and that of the Amsterdam Museum were transferred for safekeeping to a bunker in the sand-hills near Santpoort. Museum staff took turns keeping watch. Sandberg narrowly managed to evade arrest: in 1943, when a German search party was sent to apprehend him, Sandberg fled by bicycle into the dunes. Despite the upheavals of war, the Stedelijk continued to hold exhibitions.

Works by Ernst Ludwig Kirchner and Henri Matisse were added to the collection at the end of the 1940s and 1950s. During this time, the Stedelijk also acquired artworks by De Stijl and related international movements such as Russian Constructivism and Bauhaus.

Edy de Wilde, who had run the Van Abbe Museum in Eindhoven, took over as director from 1963 to 1985. He began the first collection of American contemporary art at the Stedelijk. Under his direction, in 1971, debates about the museum's social and educational functions sparked the formation of a communications department. In the early 1970s, the museum made its first acquisitions of video art by European artists including Dibbets and Gilbert & George. Today, the collection of video art contains around 900 works and installations, including works by Nam June Paik, Bill Viola and Bruce Nauman. By the mid-1970s, after the last period rooms were closed, the Stedelijk became exclusively a museum for modern art.

In 2001, drawings by Kazimir Malevich and other Russian avant-garde artists from the collection of the Khardzhiev-Chaga Cultural Centre were added to the museum's collection of Ukrainian/Russian/Soviet art.

At the end of 2003, the Adriaan Willem Weissman building was closed at the insistence of the fire department; renovation work began. The Stedelijk took up temporary residence in the old Post CS Building [nl], where it would remain for 4.5 years. In 2005, the museum established a partnership with The Broere Charitable Foundation; on behalf of the Monique Zajfen Collection, the museum acquired contemporary European artworks, which were placed at the museum on long-term loan. In 2006, debates and lectures were organized in the context of the exhibition 'Mapping the City', which explored the relationship of artists to the city. Space was created called the 'Docking Station' for monthly presentations of work by emerging artists. In 2008, 'Other voices, other rooms', an exhibition highlighting the video work of Andy Warhol, drew 600,000 visitors.

In 2006, the city council privatized the Stedelijk. It became a more businesslike enterprise that leases the museum building from the city and, on behalf of the council, mounts exhibitions and manages, maintains, and adds to the municipal collection.

Starting in late 2008, the Stedelijk underwent major construction. In response to this, the museum started the "Stedelijk goes to Town" project to maintain a visual presence within the city of Amsterdam while the building was being renovated. The project ran until the latter half of 2009 and featured a series of workshops, lectures, and presentations in various locations throughout Amsterdam.

From August 2010 until January 2011, the Stedelijk Museum opened its doors with a unique program called "The Temporary Stedelijk" in the restored, yet unfinished historical building. After welcoming 'art, artists and the public' back through its doors, the Stedelijk continued with this temporary program. "The Temporary Stedelijk 2" opened in March 2011 and focused on the renowned collection of modern and contemporary art and design. The exhibition showcased the breadth of the museum's collection and exhibited works by Piet Mondrian, Kazimir Malevich, Charley Toorop, Henri Matisse, Donald Judd, Willem de Kooning, Yves Klein and Bruce Nauman, among others. Selections from the collections were presented on a rotating basis. "The Temporary Stedelijk 3" began in October 2011 and featured exhibitions, presentations, and activities located throughout Amsterdam.

The museum reopened for the general public on 23 September 2012 with the group show "Beyond Imagination". The artists included in this inaugural show were James Beckett, Eric Bell and Kristoffer Frick, Rossella Biscotti, Eglé Budvytyté, Jeremiah Day, Christian Friedrich, Sara van der Heide, Suchan Kinoshita, Susanne Kriemann, Matthew Lutz-Kinoy, Snejanka Mihaylova, Rory Pilgrim, Falke Pisano, Julika Rudelius, Fiona Tan, Jennifer Tee, Jan van Toorn, Vincent Vulsma and Andros Zins-Browne. In the first month after the reopening, the museum had over 95,000 visitors. In 2017, the Stedelijk Museum hosted events for the 17th edition of the Sonic Acts Festival.

On 21 March 1986, Gerard Jan van Bladeren cut the painting Who's Afraid of Red, Yellow and Blue III (1967) by Barnett Newman with a utility knife during a psychotic episode. He was sentenced to eight months in jail and two years probation, and was banned from the museum for three years. On 21 November 1997, Van Bladeren, the same vandal, cut the painting Cathedra (1951), also by Barnett Newman. In court, he pleaded insanity and was not convicted, but was banned from the museum permanently.

On 20 May 1988, the first and only art theft from the Stedelijk took place. The three paintings Vase with Carnations (1886) by Vincent van Gogh, Street in Nevers (1874) by Johan Jongkind, and Still life with bottles and apples by Paul Cézanne were stolen during a break-in. On 31 May 1988, all three paintings were recovered undamaged by police pretending to be buyers. The thief was arrested and convicted.

On 15 May 2011, AFC Ajax's victory in the national competition was celebrated at the Museum Square. During the celebration, supporters damaged the Benthem Crouwel Wing's rooftop and glass panels, resulting in €400,000 of damage and prompting a change in venue to the Amsterdam Arena for the celebration of AFC Ajax's subsequent 2012 victory. Despite these issues, the city government of Amsterdam has stated that it will still consider using the Museum Square as a potential location for large events.