Simon Mrashani Basiligitwa (born 18 April 1964) is a Tanzanian marathon runner.

He won the silver medal at the 1998 Commonwealth Games held in Kuala Lumpur in a time of 2:19:42 hours.

He set his PR of 2:11:34 in 1991 in Japan, and was subsequently named to the national World Championship team in the same year.

His younger sister Banuelia Mrashani also ran the marathon at an elite level internationally.

This biographical article relating to Tanzanian athletics is a stub.