Sir Robert Digby PC(I) (1574 – 24 May 1618) was an English courtier who owned an estate at Coleshill, Warwickshire. His marriage to Lettice FitzGerald, heir-general to the 11th Earl of Kildare, led him to spend his life litigating over her claims to the Kildare lands. He divided his time between local business in Warwickshire and in Ireland.