Brian Ó Domhnaill (Irish pronunciation: [ˈbʲɾʲiənˠ oː ˈd̪ˠoːnˠəl̠ʲ]; born 18 October 1977) is an Irish former independent politician who served as a Senator for the Agricultural Panel from August 2007 to March 2020. He previously represented Fianna Fáil.