Marcin Wasilewski, born 1975 in Slawno, Zachodniopomorskie, is a Polish pianist and composer.
Wasilewski established a musical partnership with bassist Slawomir Kurkiewicz and drummer Michal Miskiewicz as the Simple Acoustic Trio in the early-1990s. Polish trumpeter Tomasz Stańko mentored the group for several years before recruiting the trio as his working band in 2001.