'Op o' Me Thumb is a 1904 one-act play by the English authors Frederick Fenn and Richard Pryce. It was produced at the Court Theatre, London, on 13 March 1904, in a double bill with Robert Browning's A Soul's Tragedy. It transferred to the St James's Theatre on 24 April 1904. The leading role of Amanda was played by Hilda Trevelyan. The play was staged in New York in 1905 with Maude Adams as Amanda. It was filmed in 1920 as Suds, starring Mary Pickford in the role created by Trevelyan.