Markus Jari Ketterer (born 23 August 1967 in Helsinki, Finland) is a retired professional ice hockey player who played in the SM-liiga and also the Swedish Elitserien as a goaltender.

He played for Jokerit, TPS as Färjestads BK, the latter of which won the Swedish national championship during the season of 1996–1997.

Markus Ketterer started his career as an ice hockey player in his hometown in the youth department of Jokerit Helsinki.

After the team had to accept relegation to the second-class I division, he played regularly in professional ice hockey for the first time in the 1987/88 season.

After the summer tournament he was selected in the 1992 NHL Entry Draft in the fifth round as a total of 107 players from the Buffalo Sabres.