Thorold is a city in Ontario, Canada.
Thorold may also refer to:
- Anthony Wilson Thorold (1825–1895), Anglican bishop of Rochester, later bishop of Winchester
- William Thorold (engineer) (1798–1878), English millwright, architect and civil engineer
- Thorold Dickinson (1903-1984), British film director and academic
- Thorold Bucknall, 11th century sheriff of Lincoln, possible brother of Lady Godiva and possible grandfather of the Earl of Lincoln William de Roumare by his possible daughter Lucy of Bolingbroke who was the wife of (1) Ivo Taillebois, (2) Roger de Roumare or Roger fitz Gerold and (3) Ranulf le Meschin
- Turold de Pont-Audemer (c. 950-1040), also called Thorold, a Norman aristocrat, Seigneur du Pontautou (Pont-Authou), de Torville (Tourville), Torcy (in Normandy) and Torny (Tourny)
- Thorold baronets, four baronetcies in England and Great Britain
- Thorold's deer (Cervus albirostris)