Medieval times •
Niall of the Nine Hostages, High King of Ireland who lived in the early-to-mid 5th century AD •
Niall Caille, High King of Ireland in the 9th century AD
Modern times •
Niall Carolan (born 2002), Irish Gaelic footballer •
Niall Ferguson (born 1964), Historian and the Laurence A. Tisch professor of history at Harvard University •
Niall Horan (born 1993), a member of the British-Irish boy band One Direction •
Niall Mackenzie (born 1961), Scottish former professional motorcycle road racer •
Niall Matter (born 1980), Canadian actor •
Niall McCready, Irish Gaelic footballer •
Niall McGinn (born 1987), Northern Irish footballer •
Niall Moran (born 1983), Irish hurler •
Niall O'Brien (born 1981), Irish cricketer •
Niall O'Donnell (born 1998), Irish Gaelic footballer •
Niall Quinn (born 1966), Irish former international footballer and chairman of the English club Sunderland A.F.C. •
Niall Treacy (born 2000), British short-track speed skater
As a surname •
Brenda Niall (born 1930), Australian writer, aunt of Jake and Richard •
Jake Niall, Australian sports journalist, cousin of Richard •
Richard Niall, Australian judge
Fictional characters • Niall, a Circle Mage from
Dragon Age: Origins • Hunter Niall from
Sweep •
Niall Brigant from
The Southern Vampire Mysteries • Niall MacDonnell from the
Honorverse •
Niall Rafferty from
Hollyoaks • Niall from
Xenoblade Chronicles 2 • Pedron Niall from
The Wheel of Time • Commander Niall from
Elden Ring ==See also==