Dolfin may refer to:
People:
- Dolfin of Carlisle, 11th century Northumbrian magnate
- Daniel and Dionigio Dolfin, last and second-to-last head of the Patriarchate of Aquileia (Episcopal) respectively
- Dolfin Dolfin, a Venetian nobleman who played a role in the 1453 siege of Constantinople
- Giovanni Dolfin (died 1361), 57th Doge of Venice
Other uses:
- Dolfin Swimwear, an aquatic sportswear manufacturer
- DOLFIN, main interface to the software FEniCS Project
- Dolfin (chocolate), a brand of chocolate bar in Belgium (see List of chocolate bar brands)