|Date of birth||9 November 1963|
|Place of birth||Pomarkku, Finland|
|Date of death||23 April 2003(aged 39)|
|Place of death||Pori, Finland|
|Height||1.75 m (5 ft 9 in)|
|1989–1996||PPT / FC Jazz||174||(30)|
|2002||FC Jazz U-19|
* Senior club appearances and goals counted for the domestic league only.
Alatensiö started his career in Porin Pallo-Toverit (later known as FC Jazz). He played three seasons in the Finnish top division Mestaruussarja and was signed by Swedish Allsvenskan club IK Brage in 1988. Two years later Alatensiö returned to Pori and played the rest of his career for PPT/FC Jazz. He won two Finnish championship titles with FC Jazz in 1993 and 1996.
Jarmo Alatensiö capped 19 times for the Finland national football team. He made his debut in September 1987 against Yugoslavia and scored his only international goal against Czechoslovakia in January 1988. After his professional years Alatensiö made a short career as a manager by coaching fourth and second tier clubs FC PoPa and MuSa at his home town Pori.
- Veikkausliiga statistics (in Finnish)
- History of IK Brage (in Swedish)
- Jarmo Alatensiö at European National Football Teams 1872–2013 Matches Database
- Player profile of Jarmo Alatensiö (in Finnish)