Isarn

Isarn may refer to:
 * Isarn of Pallars (died 948)
 * Isarn, Bishop of Grenoble (950–976)
 * Isarn (troubadours) (fl. c. 1240), troubadour
 * Isarn (inquisitor) (fl. bef. 1292), inquisitor

People with the given name

 * Isarn Marques (fl. c. 1250), troubadour
 * Isarn Rizol (fl. c. 1250), troubadour

People with the surname

 * William Isarn (died 1010s), Count of Ribagorza