Thomaso, or the Wanderer is mid-seventeenth-century stage play, a two-part comedy written by Thomas Killigrew, The work was composed in Madrid, c. 1654. Thomaso is based on Killigrew's personal experiences as a Royalist exile during the era of the Commonwealth, when he was abroad continuously from 1647 to 1660.
Thomaso is now best known as the foundation upon which Aphra Behn constructed her finest play, The Rover, or the Banished Cavaliers (1677).