Markku Aro (Finnish pronunciation: ['m?rk?u '?ro]), born as Markku Tuomas Puputti (3 February 1950 in Mouhijärvi, Finland), is a Finnish singer who performed on Eurovision contest in 1971 in Ireland with the pop-duo Koivistolaiset.
They appeared with the song "Tie uuteen päivään" ("Road to a New Day").
He has released many albums in his country and was awarded with the Iskelmä-Finlandia prize for schlager music in 2017.