Philip Sidney, 5th Earl of Leicester (8 July 1676 – 24 July 1705) was an English peer and Member of Parliament for Kent, styled Viscount Lisle from 1698 to 1702.
He inherited the earldom from Robert Sidney, 4th Earl of Leicester and was succeeded by his brother John Sidney, 6th Earl of Leicester. There is a memorial to him at St John the Baptist, Penshurst.