Adjoa Andoh (born 14 January 1963) is a British film, television, stage and radio actress. She is known on the UK stage for lead roles at the RSC, the National Theatre, the Royal Court Theatre and the Almeida Theatre. She is also a familiar face on British television, notably in two series of Doctor Who as companion Martha's mother Francine Jones; 90 episodes of the BBC's long-running medical drama Casualty as Staff Nurse (later Sister) Colette Griffiths (née Kierney); and a year in the BBC's EastEnders. Andoh is the voice of the audio book versions of Alexander McCall Smith's series of No. 1 Ladies Detective Agency novels; she won "Audio Book of the Year" for the tenth novel in the series, Tea Time for the Traditionally Built.

She made her Hollywood debut in autumn 2009, starring as Nelson Mandela's Chief of Staff Brenda Mazibuko alongside Morgan Freeman as Mandela in Clint Eastwood's Invictus.