Matti Sundelin (born 4 December 1934 in Turku) is a Finnish former footballer.
He earned 5 caps at international level between 1937 and 1941, scoring 2 goals.
At club level Sundelin played for TPS.
He scored 30 goals in the 1960 Mestaruussarja season, which is still the record for top-tier football in Finland.
In the same season he scored 7 goals against IF Drott, which is still the record number of goals scored in a single top-tier football match in Finland.