William Sandys

• William Sandys, 1st Baron Sandys, English diplomat
• William Sandys, 3rd Baron Sandys
• William Sandys, 4th Baron Sandys
• William Sandys, 6th Baron Sandys, Cavalier officer in the Royalist army during the English Civil War
• William Sandys , English MP and magistrate
• William Sandys , English MP and waterworks engineer
• William Sandys , English antiquarian and Christmas carol collector