Martin (Slovak pronunciation: [ˈmartin] ^ⓘ; until 1951 Turčiansky Svätý Martin, Hungarian: Turócszentmárton, German: Turz-Sankt Martin, Latin: Sanctus Martinus / Martinopolis) is a city in northern Slovakia, situated on the Turiec river, between the Malá Fatra and Veľká Fatra mountains, near the city of Žilina. The population numbers approximately 54,000, which makes it the ninth-largest city in Slovakia. It is the center of the Turiec region and the District of Martin.

From the second half of the 10th century until 1918, it was part of the Kingdom of Hungary. The first recorded reference to Martin in written sources is dated to 1284 under the name of Vila Sancti Martini.

In the turbulent 15th century, Martin suffered from many disasters, for example, from the attack of the Hussites in 1433, when the town was burned down. Just ten years later, it was destroyed again by an earthquake, and Martin started to slowly degrade from royal to the privileged town and under the direct influence of the Révay family.

In the 18th century, Martin became the centre of the Turóc county.

The town became the foremost Slovak cultural center in the 19th century. Several cultural institutions (including Slovak Matica and Slovak National Museum) were founded there. Most political activities leading to the Slovak national emancipation in the 19th and early 20th centuries were organized in or from Martin. The town was also industrialized at this time. The first printing works were established in 1869, the furniture factory Tatra nábytok in 1890, and so on.

The town lost some of its importance after Pressburg (today's Bratislava) became the capital of Slovakia in 1919. Today, it is the seat of the Slovak National Library and Matica slovenská.

The National Council of the Slovak Republic declared the city of Martin the center of national culture of the Slovaks on 24 August 1994.

The city of Martin won the United Nations Public Service Award in 2011 in the category: Preventing and Combating Corruption in the Public Service.