|Date of birth||16 November 1965|
|Place of birth||Turku, Finland|
|Height||1.80 m (5 ft 11 in)|
|1988||→ Bellinzona (loan)||14||(3)|
|1988–1989||→ Bologna (loan)||3||(0)|
|1993–1994||Hapoel Be'er Sheva||11||(3)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
During his career (1982–1994) he played in Finland, Italy, Switzerland, Germany, and Israel for TPS, Internazionale, Bellinzona, Bologna, Hertha BSC, Hapoel Be'er Sheva F.C. and Tampereen Pallo-Veikot. He finished his career at a relatively young age because of a persistent ankle injury, and because concentrating more on his studies. Aaltonen studied throughout his playing career, and after retiring from football, he holds a doctorate degree in economics.
Aaltonen is best remembered for a superb goal scored against Italian goalkeeper Walter Zenga in UEFA Cup in 1987 during a match between Turun Palloseura and Inter Milan at the San Siro stadium in Milan. This goal more or less earned him a transfer to Inter shortly afterwards.
- Jalkapallon Pikkujättiläinen (WSOY 2003) ISBN 978-951-0-27037-0 (in Finnish)
- Mika Aaltonen at National-Football-Teams.com
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