Irish Indoor Athletics Championships

The Irish Indoor Athletics Championships, also known as the National Senior Indoor Championships, is an annual indoor track and field competition organised by Athletics Ireland, which serves as the Irish indoor national championship for the sport.

It was first organised in 1988 by the Bord Luthchleas na hEireann (Irish Athletic Board), which later folded into Athletics Ireland and made the competition an all-Ireland championships from 2000 onwards. Athletes from Northern Ireland are also eligible to compete at the British Indoor Athletics Championships.

Typically contested in mid February, the competition features championships for both men and women, with around 28 events divided equally between the sexes. The event has had a regular title sponsor, with Woodie's DIY serving from 2007-14, Irish Life from 2015-22 and 123.ie from 2023 onwards.

Since 2003, non-Irish athletes may participate as guests only, though non-Irish athletes may compete if they are members of an athletics club in the Republic of Ireland.