The Northern Ireland Liberal Democrats is a local party of the Liberal Democrats that operates in Northern Ireland.  Unlike its counterparts in England, Scotland and Wales, the Northern Ireland party is not a state party within the federal Liberal Democrats but a local party, similar to constituency parties in the rest of the UK.
Several individuals, including Alliance Party leader David Ford, hold membership of both parties. Alliance members of the House of Lords take the Lib Dem whip on non-Northern Ireland issues. Current Alliance Party MP Naomi Long has not taken the Liberal Democrat Whip in the House of Commons as she is not a Liberal Democrat member  and sits on the opposition benches.
A former Chair of the Northern Ireland local party was Michael Carchrie Campbell, a Liberal Democrat activist formerly lived in Ballymena and Belfast.