Oissel

The club was formed in 1920 as part of the Club Athlétique d'Oissel.The club in 1958 won the Haute Normandie first division.

In 1968 under the presidency of Marcel Billard, the club changed its name to Club Municipal Sportif d'Oissel (CMSO). The club spent its time in the regional and departmental leagues until the end of the 1991-92 season when they won the Division d'Honneur, and got promoted to Division 4, but only lasted a season before being relegated again.

After gaining promotion from the Division d'Honneur again to the CFA2 at the end of the 1997-98 campaign, the club found it self back in the Division d'Honneur a single season later. what followed was another Division d'Honneur title, followed by two more seasons in the CFA 2, with their third Division d'Honneur title and promotion in 2002-03.

The club spent teh next fifteen seasons at the CFA 2/National 3 level, before winning the National 3 title in 2017-18. After spending two seasons in National 2, the club was relegated back to National 3 where they have remained since.