Margaret Thomas (disambiguation)

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