Ingenuinus was a 6th-century bishop of Säben, who served as the second historically confirmed leader of that see. Of likely Roman descent, he governed a territory in the former province of Raetia Secunda during a period of intense conflict between the Franks and the Lombards. He participated in the Synod of Marano between 588 and 590 and was among the bishops who signed a document to Emperor Maurikios in 591 regarding the Three-Chapter Controversy. He died around 605 at Säben Abbey.