Althea McNish FSCD (15 May 1924 – 16 April 2020) was a British textile designer of Trinidadian origin who has been called the first British designer of African descent to earn an international reputation. Born in Trinidad, McNish moved to Britain in the 1950s. She was associated with the Caribbean Artists Movement (CAM) in the 1960s, participating in CAM's exhibitions and seminars and helping to promote Caribbean arts to a British public. Her work is represented in the collections of the Victoria and Albert Museum, the Whitworth Museum, the Philadelphia Museum of Art, the Museum of Domestic Design and Architecture and the Cooper-Hewitt (Smithsonian Design Museum), among other places.