The article explores double titles of early modern plays written between 1581 and 1658. Titles considered include "The Fountaine of Selfe-Love, Or Cynthias Revels" by Ben Jonson, the Children's of Paul 1602 play "Blurt Master-Constable. Or The Spaniards Night-Walke," and "Twelfth-Night, or what you will," by William Shakespeare. A complete list of the forty double play titles is presented,