Andrei Marius Gag (born 27 April 1991) is a Romanian athlete competing in the shot put and discus throw.

[2] He won the silver medal at the 2015 Summer Universiade.

His personal bests in the shot put are 21.06 metres outdoors (Cluj-Napoca 2015 – NR) and 20.89 metres indoors (Portland 2014).

In addition, he has a personal best of 61.27 metres in the discus throw (Bucharest 2014).

This biographical article relating to Romanian athletics is a stub.