Otto Ruoppi (born 31 January 2006) is a Finnish professional footballer who plays as a midfielder for Veikkausliiga side KuPS, on loan from Bundesliga side Mainz 05.
After playing in a youth sector of his home town club Kuopion Palloseura, Ruoppi started his senior career in 2021 at the age of 15 with KuFu-98, the club's reserve team at the time, playing in third-tier Kakkonen.
He was loaned out to second-tier Ykkönen club Mikkelin Palloilijat for the 2023 season. During the season, he made 30 appearances for MP in all competitions combined, scoring two goals, as MP surprisingly finished in the third place of the 2023 Ykkönen.
On 6 April 2024, Ruoppi debuted in Veikkausliiga with KuPS first team, as a starter in the opening match of the 2024 season, in a 3âÂÂ1 home win against HJK Helsinki. He scored his first league goal in the next game on 13 April, in a 2âÂÂ2 away draw against IFK Mariehamn. On 31 May, Ruoppi extended his deal until the end of 2026. On 18 July, he scored a brace as KuPS defeated UNA Strassen 5âÂÂ0 in the first round of the UECL qualifiers. In his debut season in Veikkausliiga, Ruoppi contributed in 25 appearances and scored three goals, helping KuPS to win the Finnish championship title and the Finnish Cup title, completing the club's first-ever double.
On 8 July 2025, Ruoppi scored the winning goal in a UCL qualifying win against Milsami Orhei.
On 2 February 2026, it was announced that Ruoppi had signed with Bundesliga club Mainz 05 for a transfer fee of â¬1.3 million. He would stay with KuPS on loan until July.
Ruoppi is a regular Finnish youth international, and has represented his country at under-16, under-17, under-18 and under-19 national team levels. He was part of the Finland U17 squad, scoring once, in the 2023 UEFA Euro U17 Championship qualification, where Finland advanced to the Elite round.
KuPS