Grzegorz Wagner (born 13 December 1965) is a Polish former volleyball player and coach.

His father Hubert was also a volleyball player (also setter), bronze medalist of the European Championship 1967, as head coach led the Polish men's national volleyball team to titles of World Champions 1974 and Olympic Champions 1976.

His team was promoted to the top of Polish volleyball league - PlusLiga.

In season 2009/2010 he was a head coach of AZS Częstochowa and his team took 5th place in PlusLiga.

In 2010/2011 he was a head coach of women's club BKS Aluprof Bielsko-Biała.