Margaret Thomas (1842–1929) was an English-born Australian travel writer, poet and artist.

Margaret Thomas may also refer to: Margaret Murie (1902–2003), American conservationist born Margaret Thomas Margaret Thomas (hymnwriter) (1779–18??), Welsh hymnwriter Margaret Thomas (painter) (1916–2016), British artist Margaret Thomas (sport shooter) (born 1953), British sport shooter Margaret Haig Thomas, 2nd Viscountess Rhondda (1883–1958), Welsh noblewoman, businesswoman, and suffragette Marlo Thomas (born 1937), American actress, producer, author, and social activist, born Margaret Julia Thomas

See also Margaret Thomas-Neale (born 1931), British gymnast