Atenulf ( or Atinolfo) is a masculine given name. It may refer to: Atenulf I of Benevento () Atenulf II of Benevento () Atenulf III of Benevento () Atenulf I of Gaeta () Atenulf II of Gaeta () Atenulf (abbot of Montecassino) () Atenulf, brother of Pandulf III of Benevento () Atinolfo, bishop of Fiesole ()