Aeglagh Vannin ("the Youth of Mann" in Manx Gaelic) was a youth group in the Isle of Man whose purpose was the engagement with and revitalisation of Manx language, history and culture. It was established by Mona Douglas in 1931, went through a number of mutations, and faded out in the 1970s. It is best remembered for its central role in the revival of Manx folk dancing.