Timo Nieminen (born 6 October 1981 in Helsinki) is a retired professional Finnish tennis player.

He reached his highest ATP Tour singles ranking of World No.

[2] He has been a member of the Finland Davis Cup team since 2002, posting a 2–12 record in singles and 0–1 record in doubles in 12 ties.

[3] He has no relation to Jarkko Nieminen.

This Finnish biographical article is a stub.