Boso II may refer to:

Boso II of Arles (died 965/967), count of Avignon and Arles (died 1008), count of La Marche and Périgord Boso II of Turenne (), viscount of Turenne ( 1143–1147), bishop of Aosta (died 1210), viscount of Aosta

See also Boso I Boso III