Ainmuire mac Sétnai (died 569) or Ainmire or Ainmere was a High King of Ireland from the Cenél Conaill branch of the Uí Néill.
The northern Uí Néill fought the Connachta at the Battle of Slicech (modern County Sligo) in 544/547 and slew the king Eógan Bél.
[3] In 561 these northern Uí Néill princes allied with Áed mac Echach (died 577) of Connacht versus the high king Diarmait mac Cerbaill (died 565) of the southern Uí Néill whom they defeated at the Battle of Cúl Dreimne (County Sligo).
[5] In 563 these northern princes fought the Battle of Móin Dairi Lothair versus the Cruthin tribes in the north and crushed them.
[10] This Fergus was killed the next year by Ainmere's son Áed mac Ainmuirech (died 598) who was also a high king.