Gretch may refer to:
People Gretch, nickname of Grethcel Soltones (born 1995), Filipina volleyball player Paul Gretch, a co-recipient of the 2018 L. Welch Pogue Award for Lifetime Achievement in Aviation
Fictional characters Gretch Gravey, villain of 300,000,000, a 2014 novel Gretch, a police inspector in the 1898 opera Fedora and its film adaptations Gretchen, a main character nicknamed "The Gretch" in Camp Lakebottom, a Canadian animated television series
See also Gretchen Whitmer (born 1971), American politician and lawyer nicknamed "Big Gretch" Gretsch