Jesse Matias Joensuu (born 5 October 1987) is a Finnish former professional ice hockey winger who finished his career with Porin Ässät of the SM-liiga.

In the following season, Joensuu had an almost constant spot as a winger in the fourth line and he played 39 matches, in which he scored one goal and assisted one.

In his last SM-liiga season (2007–08), the now 20-year-old Joensuu lived up to expectations and scored plenty of points despite the Ässät's placement at the bottom of the league.

After his season with Ässät, Joensuu played one game with the Bridgeport Sound Tigers, the Islanders' American Hockey League (AHL) affiliate.

Joensuu started the 2008–09 season on the affiliate team in Bridgeport in the AHL, although he managed to appear in a few training games in the Islanders' jersey.

On 1 July 2011, Joensuu left the Islanders organization as a restricted free agent and signed a two-year deal with Swedish club HV71 of the Elitserien.

With the impending 2012–13 NHL lockout taking affect, Joensuu signed a contract for the duration of the dispute with hometown team Ässät on 18 September 2012.