H Gallery was an art gallery in Bang Rak District, Bangkok, Thailand. It was located in a beautiful 125-year-old Anglo-Thai mansion.[ citation needed]. According to the gallery's Facebook site it has closed the exhibition space on Sathorn road in May 2020.
Established in 2002 by American-born Ernest H. Lee, the two-storey gallery specialises in contemporary art with a mostly Asian focus. 
H Gallery began working with the Irish-born art critic and curator Brian Curtin in 2011.  Curtin inaugurated H Project Space, on the second floor, as a venue for experimental projects including performance, and he continues to also curate much of the main program. 2012 saw the opening of H Gallery Chiang Mai, in Northern Thailand, with an installation of paintings by the Thai artist Mit Jai-Inn.