| Erkka Petäjä | |
| Fullname: | Erkka Petäjä |
| Birth Date: | 13 February 1964 |
| Birth Place: | Turku, Finland |
| Position: | Defender |
| Years1: | 1980–1984 |
| Clubs1: | TPS |
| Caps1: | 86 |
| Goals1: | 3 |
| Years2: | 1985–1991 |
| Clubs2: | Östers IF |
| Caps2: | 143 |
| Goals2: | 3 |
| Years3: | 1992 |
| Clubs3: | Helsingborgs IF |
| Caps3: | 8 |
| Goals3: | 0 |
| Years4: | 1992–1993 |
| Clubs4: | Malmö FF |
| Caps4: | 18 |
| Goals4: | 0 |
| Years5: | 1993–1994 |
| Clubs5: | Yverdon-Sport |
| Caps5: | 7 |
| Goals5: | 0 |
| Years6: | 1994–1995 |
| Clubs6: | Husqvarna FF |
| Caps6: | 33 |
| Goals6: | 4 |
| Years7: | 1996–1997 |
| Clubs7: | Inter Turku |
| Caps7: | 51 |
| Goals7: | 3 |
| Totalcaps: | 333 |
| Totalgoals: | 9 |
| Nationalyears1: | 1983–1994 |
| Nationalteam1: | Finland |
| Nationalcaps1: | 84 |
| Nationalgoals1: | 0 |
Erkka Petäjä (born 13 February 1964) is a Finnish former international footballer who earned 84 caps at international level between 1983 and 1994.[1] Petäjä, who played as a defender, played professionally in Finland, Sweden and Switzerland for TPS, Östers IF, Helsingborgs IF, Malmö FF, Yverdon-Sport, Husqvarna FF and Inter Turku.[2]