Baron Lyttelton is a title that has been created once in Peerage of England and twice in Peerage of Great Britain, both times for members of the Lyttelton family. Since 1889 the title has been a subsidiary title of the viscountcy of Cobham.

Sir Thomas Lyttelton, 1st Baronet was an English Royalist officer and politician from the Lyttelton family during the English Civil War.