Oulun Palloseura (OPS) is a Finnish professional football club based in Oulu.

Founded in 1925, the club is currently competing in the Finnish fourth tier – Kolmonen.

The original Oulun Palloseura (Oulu Ball Club) was founded in 1925.

Next year the competition spot went to a registered association called Oulun Palloseura – jalkapallo ry.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.