Niall Noígíallach   (m)   ?-c. 400  
Irish Kings   368-395
Niall Frossach   (m)   ?-c. 770  
Irish Kings   763-770
Niall Caille   (m)   ?-846  
Irish Kings   833-846
Niall Glúndub   (m)   870-919  
Irish Kings   916-919
Niall Tóibín   (m)   1929-2019  
Notable Actors and Entertainers   (actor/comedian)
Niall Matter   (m)   1980-  
Notable Actors and Entertainers   (actor)
Niall O'Brien   (m)   1981-  
Notable Athletes   (cricket)
Niall McGinn   (m)   1987-  
Notable Athletes   (soccer)
Niall Horan   (m)   1993-  
Notable Musicians
Niall Brigant   (m)  
Fictional Characters from Books   2001   The Southern Vampire Mysteries
Fictional Characters from Television   2008   True Blood