Grainne Gallanagh (/ˈɡrɔːnjə ˈɡælənə/; born 22 June 1994) is an Irish model and beauty pageant titleholder who was crowned Miss Universe Ireland 2018 on 2 August 2018. She represented Ireland at Miss Universe 2018, and placed in the Top 20.^[1]

Gallanagh was raised in Buncrana, County Donegal. She attended Scoil Mhuire, Buncrana. She is a Bachelor of Science graduate from Letterkenny Institute of Technology and a nurse by profession specializing in Women's Health. ^[2][3]

Gallanagh appeared on the fourth season of the Irish edition of Dancing with the Stars in 2020. She reached the final with her professional partner, finishing as runners-up.^[5] Gallanagh appears regularly as a guest host on Virgin Media One's The Six O'Clock Show.^[6] In 2021, Gallanagh appeared on a charity special of Ireland's Fittest Family. Her team reached the final race and eventually finished as runners-up.^[7]