Excalibur may refer to:
- Excalibur (No. 1), a ship used by Shevat during the Shevat-Solaris War that was destroyed by the Merkava.
- Excalibur (No. 2), a ship used by Shevat during the Shevat-Solaris War, and again 500 years later during the attack on the Merkava.