Mornington may refer to:

• Mornington was a name used for Clandulla, in the years from 1900 to 1903.

• Mornington, Queensland, a suburb of Mount Isa
• Mornington Island, an island in the Gulf of Carpentaria
  • Mornington Island Airport
  • Shire of Mornington (Queensland)

• Mornington, Tasmania

• Mornington, Victoria
  • Electoral district of Mornington
  • Electoral district of Evelyn and Mornington
  • Electoral district of South Bourke, Evelyn and Mornington
  • County of Mornington
  • Shire of Mornington (Victoria)
• Mornington Peninsula
  • Shire of Mornington Peninsula
  • Mornington Peninsula National Park
  • Mornington Peninsula Freeway
  • Mornington Peninsula Nepean Football League
• Mornington railway line, in Melbourne
  • Mornington railway station
  • Mornington Tourist railway station

• Mornington, Western Australia, the site of former timber saw mills
• Mornington Sanctuary, nature reserve in the Kimberley region
• Mornington Station

• Mornington Island (Chile)

• Mornington House, residence of the Earls of Mornington, Merrion Street, Dublin
• Mornington, County Meath
  • Laytown–Bettystown–Mornington–Donacarney

• Mornington, Dunedin, a suburb
• Mornington (New Zealand electorate), a former parliamentary electorate
• Mornington, Wellington, a suburb of Wellington

• Mornington Crescent, a street in London
• Mornington Crescent tube station, London
• Mornington Terrace, a street in London
• Mornington Meadows, Wales

• Earl of Mornington, title in the Peerage of Ireland
  • Garret Wesley, 1st Earl of Mornington (1735–1781), Anglo-Irish politician and composer
  • Richard Wellesley, 1st Marquess Wellesley (1760–1842), 2nd Earl of Mornington
  • William Wellesley-Pole, 3rd Earl of Mornington (1763–1845)
  • William Pole-Tylney-Long-Wellesley, 4th Earl of Mornington (1788–1857)
  • William Pole-Tylney-Long-Wellesley, 5th Earl of Mornington (1813–1863), British nobleman
  • Arthur Wellesley, Earl of Mornington (born 1978), son of Charles Wellesley, 9th Duke of Wellington
  • Jemma Wellesley, Countess of Mornington
• Mornington Cannon (1873–1962), known as Morny, English champion jockey

• Mornington (ship), a list of ships

• Mornington Crescent (disambiguation)
• Morningtown Ride, a lullaby