John Philip Kemble as Cato

John Philip Kemble as Cato is an 1812 portrait by the English artist Thomas Lawrence of the actor John Philip Kemble. Part of the Kemble dynasty he was, along with his sister Sarah Siddons, one of the most celebrated actors of the period. Lawrence had established himself as the leading portrait painter of the Regency era and had previously painted Kemble as Hamlet in 1801.

Kemble is shown in the role of Cato from Joseph Addison's 1713 play Cato, a Tragedy. It was exhibited at the Royal Academy's Summer Exhibition. Today it is in the National Portrait Gallery in London having been purchased in 2009 with assistance from the Art Fund and Garrick Club.