Jemma is a female given name and variant spelling of Gemma, meaning gem. It may refer to the following people : Jemma Ananyan (1931–2018), Armenian politician Jemma Dallender (born 1988), English film actress Jemma Dolan, member of the Northern Ireland Assembly; Jemma Griffiths (born 1975), birth name of Welsh singer Jem; Jemma Lilley (born 1991), English crime fiction writer and murderer Jemma McKenzie-Brown (born 1994), English actress Jemma Mitchell (born 1984), British–Australian woman convicted of murder Jemma Redgrave (born 1965), British actress Jemma Rose (born 1992), English footballer Jemma Wellesley, Countess of Mornington (born 1974), British make up artist and model.
Fictional characters Jemma Simmons, an Agents of S.H.I.E.L.D. character