Teemu Tainio

Tainio made his debut for the Finland national team on 5 February 1998 against Cyprus, and was a regular for the team through most of the 2000s. After signing with New York Red Bulls in 2011, Tainio announced that he might retire at the international level, citing the long-distance flights and time difference between the States and Finland. After a two-year hiatus, Tainio made his comeback to the international team, immediately after his contract with the Red Bulls expired.

Early life and career

Tainio was born in Tornio. He was promoted to the first team of his hometown club TP-47 in Kakkonen, Finland's third tier, at the age of fourteen. He was signed by Veikkausliiga club FC Haka for the 1996 season.

AJ Auxerre

Following a trial at Manchester United in March 1997, Tainio was bought by French top-tier club AJ Auxerre in 1997 for a fee equivalent of €760,000 in current currency, and spent eight years at the club. He won the Coupe de France with Auxerre twice, and also gained UEFA Champions League experience. While with Auxerre, Tainio appeared in 204 official matches and scored 19 goals.

Tottenham Hotspur

With Tainio's contract with Auxerre due to expire in 2005, he became available on a free transfer. In January 2005, it was announced that he would move to Tottenham Hotspur on a seven-year deal in the summer of 2005. He became a regular for Spurs in his first season, playing in various midfield positions. He scored his first goal for his new club in December 2005 against Newcastle United during a Premiership match at White Hart Lane. Tainio was one of ten Spurs squad members struck down by a virus on the evening of 6 May 2006 before their crucial final game of the season against West Ham. He nevertheless played in the match, which Spurs lost, missing out on a place in the Champions League. He scored his second Spurs goal on 9 December 2006, the third goal in the 5–1 home win against Charlton Athletic. His third…

After Tainio ended his playing career, he worked for his former club Tottenham as a scout, before returning to Finland and starting as an assistant coach of Klubi 04, the reserve team of HJK Helsinki.

Haka

On 1 November 2018, Tainio was appointed as manager of Ykkönen side FC Haka, having previously worked as an assistant coach for the side. In his first season as manager, FC Haka overwhelmingly won the Ykkönen title, earning the club promotion to top tier Veikkausliiga. In the 2022 Veikkausliiga season, Tainio led Haka to finish 4th in the league with a limited budget and gained place in the 2023–24 UEFA Europa Conference League qualifiers, club's first appearance in Europe since 2008–09 UEFA Cup.

AEL Limassol (assistant)

On 28 October 2023, it was reported that Tainio starts working as the assistant coach of AEL Limassol in Cypriot First Division. On 22 January 2024, the club announced the termination of the contract of head coach Toni Koskela by mutual agreement, and simultaneously Tainio's contract was terminated as well.

Tallinna Kalev

On 7 March 2024, Tainio was named the assistant coach of Tallinna Kalev in Estonian Meistriliiga. On 1 August 2024, he was named the manager of the club.

Finland (assistant)

On 17 June 2024, Tainio was also named an assistant coach of the Finland national football team. His tenure ended in February 2025, when Jacob Friis replaced Markku Kanerva as head coach.

His son Maximus Tainio is a Finnish professional footballer for Ykkösliiga club Salon Palloilijat (SalPa).