William de Warenne

• William de Warenne, 1st Earl of Surrey
• William de Warenne, 2nd Earl of Surrey
• William de Warenne, 3rd Earl of Surrey
• William de Warenne, 5th Earl of Surrey
• William de Warenne (1256-1286), only son and heir apparent to John de Warenne, 6th Earl of Surrey
• William de Warenne (justice), justice of the Curia Regis
• Sir William de Warenne, character in ''The Castle''