Once Upon a Time in Northern Ireland is a 2023 British documentary television miniseries covering the ethno-nationalist conflict known as "The Troubles". Directed by James Bluemel, as a follow-up to his 2020 series Once Upon a Time in Iraq, it is composed of five episodes that features interviews with members of Republican and Loyalist paramilitaries, members of the British Army who served in Northern Ireland, along with others caught up in the conflict.