Mika-Matti Petteri "Mixu" Paatelainen is a Finnish former professional football player and manager who was most recently head coach of Veikkausliiga club HIFK. He scored 18 goals in 70 appearances for the Finnish national team, which makes him Finland's all time thirteenth most capped player and fifth top goalscorer. He is the eldest of three brothers, all of whom have played professional football. Their father Matti was also a Finnish international.

The Finland national football team represents Finland in men's international football competitions and is controlled by the Football Association of Finland, the governing body for football in Finland, which was founded in 1907. The team has been a member of FIFA since 1908 and a UEFA member since 1957.