Dmitry Marshin (born as Dzmitri Marshyn, 15 September 1972 in Mogilev) is an Azerbaijani athlete of Belarusian descent.
He competed for Azerbaijan in hammer throw at the 2012 Summer Olympics, finishing in 20th in the qualifying round and not qualifying for the final. His personal best is a throw of 79.56 in 2012.
In 2015 Marshin was suspended for four years after he failed a drug test.