| Pertti Alaja | |
| Fullname: | Pertti Johannes Alaja |
| Birth Date: | 18 February 1952 |
| Birth Place: | Helsinki, Finland |
| Death Place: | Espoo, Finland |
| Position: | Goalkeeper |
| Years1: | 1971-1972 |
| Caps1: | 31 |
| Goals1: | 0 |
| Years2: | 1973-1975 |
| Caps2: | 57 |
| Years3: | 1976-1977 |
| Caps3: | 44 |
| Goals3: | 0 |
| Years4: | 1978–1979 |
| Years5: | 1980–1981 |
| Clubs5: | Edmonton Drillers[1] |
| Caps5: | 47 |
| Goals5: | 0 |
| Years6: | 1982–1983 |
| Caps6: | 44 |
| Goals6: | 0 |
| Nationalteam1: | Finland[2] |
| Nationalcaps1: | 29 |
| Nationalgoals1: | 0 |
Pertti Johannes Alaja (18 February 1952 – 18 August 2017) was a Finnish footballer who played as a goalkeeper.[3]
Alaja was elected as the 15th president of the Football Association of Finland on 14 October 2012, replacing Sauli Niinistö.[4]