Ninian may refer to:
People Ninian, medieval Christian bishop who evangelized the Picts Ninian Cockburn (died 1579), Scottish soldier Ninian Edwards (1775–1833), American politician Ninian Wirt Edwards (1809–1889), American politician Ninian Stephen (1923–2017), Australian Governor-General Ninian Crichton Stuart (born 1957), Scottish hereditary palace keeper Lord Ninian Crichton-Stuart (1883–1915), Welsh politician
Places Ninian (river), France Ninian Central Platform, oil platform in the North Sea Ninian Park, football stadium in Cardiff St Ninian's Isle, Shetland
Other Ninian, a character in Nintendo's Fire Emblem: The Blazing Blade