Dimitri Colupaev (born 29 January 1990) is a Moldovan-born German swimmer.
He competed in the 4×200 metre freestyle relay event at the 2012 Summer Olympics and finished fourth.
At the 2012 European Aquatics Championships, Colupaev and his German teammates won the gold in the 4×200 metre freestyle relay.In 2010 he was studying at the University of Southern California in the United States.