Martijn Dieleman (born (1979-05-11)11 May 1979 in Goes) is a former Dutch male volleyball player.

He was part of the Netherlands men's national volleyball team.

He competed with the national team at the 2000 Summer Olympics in Sydney, Australia, finishing 5th.

Dieleman is a life and spiritual coach who runs a self-improvement Youtube channel.

This biographical article relating to volleyball in the Netherlands is a stub.