KFUMs Boldklub was founded on 4 June 1899, under the name of
Kristelig Idrætsforening (). KFUM's football team played its first competitive game in 1901, losing 14–0 to
Akademisk Boldklub. When the four biggest teams decided to quit the
Copenhagen Football Association, KFUM was one of the replacement teams in the
1911 Copenhagen Football Championship. KFUM finished the tournament in joint last place, and was moved out of the championship when the big teams returned for the following season. KFUM competed in the lower tiers of Copenhagen football until 1930, when the club entered the nationwide
Danish 2nd Division. During the
Occupation of Denmark in
World War II, KFUM was included in the top-flight
Danish football championship. KFUM reached the semi-finals of the
1940–41 Danish War Tournament and the quarter-finals for the following three seasons. After the war, KFUM was moved to the 2nd Division again. When KFUM finished in second place in the 1956–57 2nd Division season, the club won
promotion for the top-flight
Danish 1st Division. It was a short trip to the 1st Division; following 11 points in 22 games, KFUM were
relegated straight back into the 2nd Division. KFUM played on in the 2nd and
Danish 3rd Division. The club was relegated from the 3rd Division into the lower leagues in 1975, and has not since played in the upper divisions. The football club played its games at the
Fælledparken, a
common shared by the smaller Copenhagen clubs. In 1921, KFUM moved to
Emdrupparken, where a new club house was built in 1943, designed by architect
Arne Jacobsen. KFUM was one of several small Copenhagen clubs who founded the
Alliancen association. Alliancen arranged exhibition games to earn spectator entrance fees, and was in direct competition with the high-profile
Stævnet association. ==International players==