Willis may refer to:
- Lord Willis Kemeny, 9th Earl of Howell, a Manticoran Peer of the Realm.
- Willis Jennings, an officer of the Solarian League Navy.
- Alfred Willis, tactical officer of GLAC Intrepid.
- the Willis, a starship in Andrew Warnecke's private navy.
- the Willis System, one of the systems in the Chalice Cluster.