Index: Papers of John Adams, Volume 19, U

• Unitarianism
• United States
• University of Edinburgh
• University of Glasgow
• University of Leyden
• University of Pennsylvania
• Upton, Clotworthy, Jr. (son of Baron of Templetown)
• Upton, Francis (son of Baron of Templetown)
• Upton, Sophia (daughter of Baron of Templetown)
• Utrecht (province of the Netherlands)