William Montagu

• Bossiney (UK Parliament constituency)
• Huntingdonshire (UK Parliament constituency)
• Midhurst (UK Parliament constituency)
• Montagu Williams
• Stockbridge (UK Parliament constituency)
• William Augustus Montagu
• William Augustus Montagu (MP)
• William Montacute (disambiguation)
• William Montagu (MP)
• William Montagu (judge)
• William Montagu (younger)
• William Montagu Manning
• William Montagu, 1st Earl of Salisbury
• William Montagu, 2nd Baron Montagu
• William Montagu, 2nd Duke of Manchester
• William Montagu, 5th Duke of Manchester
• William Montagu, 7th Duke of Manchester
• William Montagu, 9th Duke of Manchester
• William Pepperell Montague
• William de Montagu, 2nd Earl of Salisbury