Jellett is a surname. Notable people with the surname include:

John Hewitt Jellett (1817–1888), college head, provost of Trinity College, Dublin Eva Jellett, first woman to graduate in medicine from Trinity College, Dublin Henry Jellett (priest) (died 1901), Irish Anglican priest and Dean of St Patrick's Cathedral, Dublin, father of the gynaecologist William Jellett (1857–1936), Irish Unionist Member of Parliament in the UK Parliament Edwin Jellett (1860–1929), American writer from Germantown, Philadelphia Henry Jellett (gynaecologist) (1872–1948), Irish gynaecologist and author, son of the dean Mainie Jellett (1897–1944), Irish painter John Holmes Jellett (1905–1971), British civil engineer Rob Jellett, Canadian local politician – City Councillor in Ottawa, Ontario

See also Cellettes (disambiguation) Kellet (disambiguation)