Malcolm Sinclair (born 5 June 1950) is a British stage and television actor and former President of Trade Union, Equity 2010–18 when he stood down after 4 terms and was replaced by Maureen Beattie.

He has performed widely, both in Britain and internationally, in roles that have included Shakespeare (Hamlet, Malvolio), Oscar Wilde, George Bernard Shaw, Ibsen and Noël Coward.

Sinclair appeared in the play Little Lies, starring Sir John Mills, at Wyndham's Theatre, London, England, which ran from July 1983 through February 1984, written by Joseph George Caruso and produced by Robert Mackintosh and William de Silva, and was directed by Tony Tanner.

The play also starred Connie Booth, Anthony Bate, Dominic Guard, Paul Hardwick, Angela Scoular, Katherine Kath, Alison Neil and Gregory Cox.

[2] In January 2014, after responding to a trailer for a new season of TV drama which failed to include a single BAME artist, the actor Danny Lee Wynter brought together a group of friends and colleagues, Ruth Wilson, Stephanie Street, Daniel Evans, Andy Pryor, Malcolm Sinclair, Kobna Holdbrook-Smith, Ony Uhiara, and Matthew Xia, to find a way to inspire change in TV drama.