Saint-Yves, Saint Ivo, or Sant'Ivo can refer to:
Christian saints
edit- Saint Ivo of Chartres (c. 1040-1115), bishop of Chartres, feast day 23 May
- Saint Ivo of Kermartin (1253-1303), patron saint of Brittany, lawyers and abandoned children, feast day 19 May
Churches
edit- Sant'Ivo alla Sapienza in Rome, dedicated to Ivo of Kermartin
- Sant'Ivo dei Bretoni in Rome, also dedicated to Ivo of Kermartin, a French national church
Surname
edit- Saint-Yves (surname), a French surname