Tobias Beer is an English screenwriter and actor. Born in Cambridge, he studied at Oxford University and the Webber Douglas Academy of Dramatic Art. While at Oxford University, he won a blue in rugby union, scoring 11 points in their 1999 16–13 victory over Cambridge University in The Varsity Match.

He has worked predominantly in the theatre, and his credits include: Great Expectations, Merry Wives of Windsor (with Judi Dench, Simon Callow and Alistair McGowan), Twelfth Night and The Comedy of Errors (all for the Royal Shakespeare Company; The Changeling for Cheek by Jowl, directed by Declan Donnellan; Cymbeline, Twelfth Night, Macbeth and A Midsummer Night's Dream for the Open Air Theatre, Regent's Park In 2015 he returned to the RSC in Death of a Salesman.

In 2019 he co-created, wrote and executive produced the television drama The Deceived[6] for Channel 5, Virgin Media Ireland and Netflix.