Piers Butler of Duiske, Barrowmount, County Kilkenny (died 1650) was the son of Edward Butler, 1st Viscount Galmoye and Hon. Anne Butler, daughter of Edmund Butler, 2nd Viscount Mountgarret . He gained the rank of Colonel of Dragoons. After the Battle of Lambstown, County Wexford, he was taken prisoner, and was "killed, it is said after quarter being given" by the Cromwellian Captain William Bolton.