Toni Markus Nieminen (born 31 May 1975) is a Finnish former ski jumper who competed from 1991 to 2004, with a brief comeback in 2016.

He is one of the most successful ski jumpers from Finland, having won both the World Cup overall title and the Four Hills Tournament in 1992, and three medals at the 1992 Winter Olympics.

At the time, the transition from the parallel style to the V-style was taking place and Nieminen was one of the first to master the new technique.

Additionally, Nieminen won the World Junior Championship in both the Individual and the Team competitions.

Nieminen made a comeback on 30 January 2016 finishing 17th in normal hill Finnish championship.