Ault may refer to:

• Chris Ault, American head coach for the Nevada Wolf Pack football team
• Dick Ault, American athlete
• John Ault, English writer, academic, and politician
• Doug Ault, Major League Baseball player
• George Ault, American painter
• Harry Ault, American labor union newspaper editor
• James Percy Ault, American geophysicist, oceanographer, and captain of a research vessel
• Levi Addison Ault, businessman and bureaucrat
• Marie Ault, British actress
• Robert Ault, American art therapist
• Samuel Ault, Ontario political figure
• William Ault, English potter
• William B. Ault, American naval aviation officer

• Ault, Colorado
• Ault, Northern Ireland
• Ault Hucknall, a small village in Derbyshire, England
• Ault Park (Ontario), Ontario, Canada
• Ault Park, Cincinnati, Ohio, US
• Ault, Somme, France
• Ault Township, St. Louis County, Minnesota

• USS Ault (DD-698)
• "Ault Pottery" and "Ault Faience", see William Ault

• Auld (disambiguation)