The Fenton Baronetcy, of Mitchelstown in the County of Cork, was a title in the Baronetage of Ireland. It was created on 22 July 1661 for Maurice Fenton. He was married to Elizabeth Waller, who after Fenton's death married as her second husband Sir William Petty and was created Baroness Shelburne in her own right. The title became extinct on the early death of the second Baronet in 1671.