Martha Otito Osamor, Baroness Osamor (née Osantor; born 24 September 1940)[1] is a British-Nigerian Labour Party politician, life peer, community activist and civil rights campaigner.

Born Martha Otito Osantor in Delta State, Nigeria, Osamor moved to the UK in 1963 to join her husband who was then studying in London.

Osamor was a co-founder of the United Black Women's Action Group (UBWAG).

From 1977 to 1997, Osamor worked at the Tottenham Law Centre (now called the Haringey Law Centre) and during this time became part of the Broadwater Farm Youth Association Mothers' Project on the nearby Broadwater Farm housing estate.

However, her candidacy was blocked by the party's National Executive Committee on the advice of the then leader, Neil Kinnock.