Hanssen rhymes with:
hansen, hanson, hansson, johannsen, johansen, johanson, ansohn, anson, branson, canson, danson, fransen, franson, franssen, gansen, ganson, hansen, hanson, hansson, jansen, janson, janssen, jansson, johannsen, johansen, johanson, manson, ranson, ransone, sanson, sansone
Hanssen sounds like:
hamson, hanagan, hangen, hangin', hangman, hanigan, hanjin, hanken, hankin, hannagan, hanneken, hannesson, hannigan, hanscom, hansen, hanshin, hansma, hansman, hansmann, hansom, hanson, hansson, heineken, heinsohn, heinzen, heinzman, heinzmann, hemmingsen, hemmingson, hemocyanin, henchman, henchmen, heneghan, henigan, henken, henkin, hennigan, henningsen, henschen, hensen, henson, hinchman, hingham, hinkson, hinson, hinzman, homogeny, honasan, humanism, hunchine, hynson