Michael Óg McFadden (1885 – 27 August 1958) was an Irish Fine Gael politician. A merchant and auctioneer, he was first elected to Dáil Éireann as a Cumann na nGaedheal Teachta Dála (TD) for the Donegal constituency at the June 1927 general election. He was re-elected at the September 1927 general election but lost his seat at the 1932 general election. He re-gained his seat at the 1933 general election and was re-elected at each subsequent election until he lost his seat again at the 1951 general election. At the 1951 Seanad election, he was elected to the 7th Seanad on the Agricultural Panel. He lost his seat at the 1954 Seanad election.