Viscounts | Titles by Rank
- Viscounts of Ipanema
- Viscounts of Ipiabas
- Viscounts of Irueste
- Viscounts of Isasi-Dávila
- Viscounts of Itabapoana
- Viscounts of Itabayana
- Viscounts of Itaboraí
- Viscounts of Itacolumi
- Viscounts of Itaguaí
- Viscounts of Itaguaí
- Viscounts of Itaguí do Norte
- Viscounts of Itajubá
- Viscounts of Itamarati
- Viscounts of Itaparica
- Viscounts of Itapicuru de Cima
- Viscounts of Itatiaia
- Viscounts of Itaúna
- Viscounts of Itu
- Viscounts of Iznájar
- Viscounts of Jacquelot de Boisrouvray
- Viscounts of Jacquelot du Boisrouvray
- Viscounts of Jaguari
- Viscounts of Jaguari-I
- Viscounts of Jaguaribe
- Viscounts of Jari
- Viscounts of Jequitinhonha
- Viscounts of Jerumirim
- Viscounts of Jonghe d' Ardoye
- Viscounts of Jorbalán
- Viscounts of Joyeuse
- Viscounts of Julliac
- Viscounts of Junqueira
- Viscounts of Juromenha
- Viscounts of Kerautem
- Viscounts of Kergariou
- Viscounts of Kermel
- Viscounts of Kerret de Quillieu
- Viscounts of l' Aigle
- Viscounts of l'Isle and Dudley
- Viscounts of l'Isle e Dudley
- Viscounts of la Alborada
- Viscounts of la Armería
- Viscounts of La Barre de Nanteuil
- Viscounts of La Bellière
- Viscounts of La Boussinière
- Viscounts of la Calzada
- Viscounts of la Dehesilla
- Viscounts of La Fresnaye
- Viscounts of La Grandière
- Viscounts of la Haye-Saint Hilaire