Mika Juhani Koivuniemi (born 6 April 1967) is a Finnish bowling coach and semi-retired professional ten-pin bowler.
He competed on the Professional Bowlers Association (PBA) tour in the United States, and won bowling titles in 21 different countries during his career.
He is a two-time PBA Player of the Year (2003–04 and 2010–11 seasons), one of only three players born outside the USA (with Amleto Monacelli and Jason Belmonte) to win that award.
Koivuniemi is the first European bowler ever elected to the PBA Hall of Fame; he was inducted in 2019.
He is also a member of the World Bowling Writers Hall of Fame and Finland Bowling Hall of Fame.Koivuniemi is currently the bowling coach for the United Arab Emirates national team, and competes in some events on the PBA50 Tour.