Mariehamn Football Club (abbreviated as "Mariehamn", English name: IFK Mariehamn), founded in 1919, is a multi-sport club based in Mariehamn, the capital of the Åland Islands in Finland.
In its early years, the club participated in lower-tier local competitions and joined the Finnish football league system for the first time in 1945. It was promoted to the second division for the first time in 1972 and briefly competed in the top division from 1977 to 1978, after which it lingered in lower divisions until returning to the top division in 2004.
Promoted to the Finnish top league for the first time in 2005, beginning their journey in the top league. In 2015, the team defeated FC Inter 2-1 in the Finnish Cup final, winning their first Finnish Cup title. In 2016, the team performed excellently in the Veikkausliiga season, ultimately winning the Finnish football championship and becoming the first team from the Åland Islands to win the top league title. In 2019, the team reached the Finnish Cup final but lost 0-2 at home to Ilves, finishing as runners-up.