Jonathan Hyde (born 21 May 1948) is an English actor of Australian origin, known for his roles as J. Bruce Ismay, managing director of the White Star Line in Titanic, Egyptologist Allen Chamberlain in The Mummy, and Sam Parrish / Van Pelt, the hunter in Jumanji. He is married to Scottish soprano Isobel Buchanan. They have two daughters, one of whom is actress Georgia King.

Hyde was born in Brisbane, Queensland. He is a member of the Royal Shakespeare Company. Among other roles, he played Ferdinand in the 1985 production of John Webster's The Duchess of Malfi. He graduated from the Royal Academy of Dramatic Art and is an associate member. He was also one of the original cast members of Not the Nine O'Clock News, whose first season was pulled from the air due to the 1979 general election. Hyde has appeared in numerous films, including The Contract, The Curse of King Tut's Tomb, Land of the Blind, The Tailor of Panama, Sherlock Holmes and the Case of the Silk Stocking, Eisenstein, Anaconda, and Richie Rich.

He appeared in the 1989 BBC miniseries Shadow of the Noose, in which he played the famous barrister Edward Marshall Hall. He has also appeared in several television detective series, including The Adventures of Sherlock Holmes with Jeremy Brett and Midsomer Murders.

In 2007, Hyde played Dr. Dorn in Chekhov's The Seagull and the Earl of Kent in King Lear for the RSC in a repertory company that included Ian McKellen, Frances Barber, Romola Garai, William Gaunt, and Sylvester McCoy. Both plays toured together around the world before settling at the New London Theatre. The final performance took place on 12 January 2008. He reprised his role as Kent in the 2008 television film King Lear.