Katsina State (Hausa: Jihar Katsina جىهر كثينا; Fula: Leydi Katsina 𞤤𞤫𞤴𞤣𞤭 𞤳𞤢𞥁𞤭𞤲𞤢) is a state in the northwestern geopolitical zone of Nigeria. Katsina State borders the Republic of Niger to the north for 250 km (155 miles) and the States of Jigawa for 164 km (102 miles) and Kano to the east, Kaduna to the south for 161 km (100 miles) and Zamfara to the west. States. Nicknamed the "Home of Hospitality", Both the state capital and the town of Daura have been described as "ancient seats of Islamic culture and learning" in Nigeria.

Katsina State was created in 1987 when it was split from Kaduna State. With over 5,800,000 residents as of 2006, Katsina State is the fifth most populous state in the country, despite the fact that it only ranks 17th out of 36 states in terms of area. Demographically, the Hausa people are the largest ethnic group in the state, and Islam is the most practised religion. In 2005, Katsina became the fifth state in Nigeria to adopt Sharia law.

The current Governor of Katsina State is Dikko Umar Radda, a member of the All Progressives Congress and ally of President Bola Ahmed Tinubu. The state is considered a political stronghold of Buhari, a native of Daura, who won the state in the 2019 presidential election with almost 80% of the vote.

In recent years, Katsina has been one of the Nigerian states hit hardest by local banditry and terrorism. In 2020, over 300 children were kidnapped by the terrorist group Boko Haram in the town of Kankara.

Hausa are the largest ethnic group in the state

The state is predominantly Muslim and the Gobarau Minaret is an important building therein. Sharia is valid in the entire state but mainly for the Muslims. The Church of Nigeria has a Diocese of Katsina. The Redeemed Christian Church of God, the Roman Catholic Church and many other churches are present in the state.

Katsina State is about 23,938 square kilometres (9,243 sq mi). It is situated between latitude 11°07'49" and 13°22' 57" N and longitude 6°52'03" E and 9°9'02" E. The state is from the tropical grassland known as savannah to the north and the state has two major seasons which are the rainy season and dry season.

Katsina has a tropical steppe climate, bordering on a tropical savanna climate. The city's yearly temperature is 30.89 °C (87.6 °F) and it is 1.43% higher than Nigeria's averages. Katsina typically receives about 791.61 millimeters of precipitation and has 54.63 rainy days (14.97% of the time) annually.

Katsina State comprises 34 local government areas:

Katsina State is a centre of both formal and informal education. Umaru Musa Yar'adua University is a public university owned by the state government. Al-Qalam University, the first Islamic university in Nigeria is privately owned. Federal University, Dutsin-Ma and Federal University of Transportation, Daura are owned by the federal government as well as Federal College of Education, Katsina (affiliated to Bayero University Kano). National Open University of Nigeria, Isa Kaita College of Education Dutsinma (affiliated to Ahmadu Bello University, Zaria), a state-owned college of education. Cherish Institute Batsari is a privately owned university awarding degrees in health courses.

• A2 (part of the African Unity Road or Trans-Sahara Highway or Trans-African Highway 2: TAH 2) north from Jigawa State via Daura to RN10 in Niger
• A9 (part of the Dakar-Ndjamena Trans-Sahelian Highway or Trans-African Highway 5: TAH 5) north from Kano State near Gidan Mutum Daya as the Kano-Karkia-Katsina Rd via Gaci, Cheranchi, Rimi and Katsina to RN9 in Niger
• A126 north from Kaduna State via Kwatangiri, Funtua, Galadima, Daudawa and Shemi to Zamfara State at Yankara

• from Jiba to RN18
• A9 (TAH5) at Jibiya to RN9
• the Kaita Rd north from Katsina Ring Rd at Shinkafi via Dan Kabba at Dankama to Magami
• northwest from A2 at Kongodumm via Mefaru to N20
• A2 (TAH 2) to RN10 at Kongodumm, Zango to Farwa via Beridji
• the Rahamawa-Yardaji Rd east from Baure to RN12
• north from the Birnin Mutum-Kanya Baba Miltara Rd in Mutum to RN11

• the Katsina-Gusau Rd west from A9 to Zamfara State at Gidan Baure
• the Daura-Katsina Rd east from Katsina
• the Safana-Karida-Dishi Rd east from A2 at Sandamu to Rogogo Cidari
• the Zango-Baure Rd northwest via Rogogo Massabka
• the Baure-Tumfushi-Birnin Mutum Rd east
• the Yashi-Daya Rd south from A9 at Gidan Mutum Daya via Jikamshi, Dan Janku, and Malumfashi to Mararraba Kankaro as the Furtua-Gobirawa Rd
• the Gwarzo-Gangara-Dayi Rd east from Dan Tatashi to Kano State at Gangara
• the Katsina-Kurfi Rd south from Katsina via Tsanni, Kurfi, Bichi, Dutsin Wai, Safana, Yan Tumaki, Kankara and Yargoje to Mararraba Kankaro as the Kankara-Sulubawa Rd
• the Bakori-Funtua Rd northeast from A126 at Funtua via Bakori and Dutsin Makurdi Fore to Mararraba Kankaro as the Malumfashi Rd
• the Funtua-Dan Dume Rd east from A126 at Sa Adu via Mahuta, Gyazama, Dan Dume and Mahazu to Zamfara State as the Bakin Dutsi-Farin Ruwa-Birnin Gwari Rd near Ungwan Kimba

Katsina State is serviced by the Katsina Airport which has regular services to Abuja and Lagos.

• Abba Musa Rimi, Governor of Kaduna State 1980–1983
• Abdulmuminu Kabir Usman, Emir of Katsina
• Aminu Bello Masari, former speaker house of representatives 2003 to 2007 and former Governor of the State
• Faruk Umar Faruk CON, current and 60th Emir of Daura
• Habu Daura, Commissioner of Police; acting Administrator of Bayelsa State from February to June 1997
• Hadiza Bala Usman, former managing director of Nigerian Ports Authority
• Hamza Rafindadi Zayyad, former head of the Technical Committee on Privatization and Commercialization
• Hassan Katsina, military governor of the northern region 1966–1967
• Ibrahim Coomassie, Inspector General of Police 1993–1999
• Ibrahim M. Ida, Senator for Katsina Central constituency of Katsina State, Nigeria, taking office on 29 May 2007; member of All Progressive Congress APC
• Ibrahim Shema, Governor of Katsina State 2007–2015
• Isa Kaita, first northern Nigeria minister of education and speaker of the house of parliament
• Sheikh Ja'afar Mahmud Adam, Salafist Islamic scholar aligned with the Izala Society
• Lawal Kaita, Governor of Kaduna State 1983
• Lawal Musa Daura, Director General of the Nigerian State Security Service
• Magaji Muhammed, former Minister of Internal Affairs, former Minister of Industries, former Nigerian Ambassador to the Kingdom of Saudi Arabia.
• Mahmud Kanti Bello, former Chief Whip of the Senate
• Mamman Shata, Hausa griot/musician
• Mohammed Bello, former Chief Justice of the Supreme Court
• Mohammed Tukur Liman, former majority leader of the Nigerian Senate.
• Muhammadu Buhari, Military Head of State 1983–1985, Chairman PTF and President of Nigeria 2015-2023
• Muhammadu Dikko Yusufu Inspector General of Police 1975–1979
• Muhammadu Dikko, Emir of Katsina 1906–1944.
• Saddik Abdullahi Mahuta, former Chief Judge of Katsina State 1991–2013 and the 11th Galadiman Katsina, District Head of Malumfashi
• Sani Ahmed Daura, Lagos State commissioner of police 1990, and first governor of Yobe State 1991–1992
• Sani Zangon Daura, Federal Minister of Agriculture and Rural Development 1999–2000, Federal Minister of Environment 2000 – 2001
• Shehu Musa Yar'Adua, politician, major general and Military Vice President 1976–1979
• Sunusi Mamman, a two time Vice Chancellor of Umaru Musa Yaradua University, Katsina.
• Tajudeen Abdul-Raheem, Pan-Africanist, Oxford Rhodes Scholar and former deputy director of United Nations Millennium Campaign for Africa 1961–2009
• Umar Dikko Radda (born 1969), Nigerian politician and Governor of Katsina State since 2023
• Umar Farouk Abdulmutallab, sentenced to life imprisonment in the United States for attempting to bomb Northwest Airlines Flight 253 on Christmas Day, 2009.
• Umaru Musa Yar'Adua, Governor of the State 1999–2007, and President of Nigeria 2007–2010
• Umaru Mutallab, business and banking veteran; former Minister of economic development
• Ummarun Dallaje, 39th Islamic Leader of Katsina; first Fulani emir; patriarch of the Dallazawa dynasty
• Yakubu Musa Katsina, Islamic scholar
• Yusufu Bala Usman, historian and Marxist

The state government is led by a democratically elected governor who works closely with members of the state's House of Assembly. The capital city of the state is Katsina.

The governor of each state is selected using a modified two-round system. To be elected in the first round, a candidate must receive the plurality of the vote and over 25% of the vote in at least two-thirds of the State's local government areas. If no candidate passes the threshold, a second round will be held between the top candidate and the next candidate to have received a plurality of votes in the highest number of local government areas.