GH1 can refer to:
Glycoside hydrolase family 1, a family of enzymes Growth hormone 1, a human gene Pseudomonas virus gh1, a bacteriophage which infects some strains of Pseudomonas putida. Panasonic Lumix DMC-GH1, a digital hybrid still photography/video camera Guitar Hero (video game), the first game in the series Hill GH1, 1975 Formula One car