The Raigne of King Edward the Third, commonly shortened to Edward III, is an Elizabethan play printed anonymously in 1596, and at least partly written by William Shakespeare. It began to be included in publications of the complete works of Shakespeare only in the late 1990s. Scholars who have supported this attribution include Jonathan Bate, Edward Capell, Eliot Slater, Eric Sams, Giorgio Melchiori and Brian Vickers. The play's co-author remains the subject of debate: suggestions have included Thomas Kyd, Christopher Marlowe, Michael Drayton, Thomas Nashe and George Peele.

William Shakespeare (1564–1616) wrote sonnets on a variety of themes. When discussing or referring to Shakespeare's sonnets, it is almost always a reference to the 154 sonnets that were first published all together in a quarto in 1609. However, there are six additional sonnets that Shakespeare wrote and included in the plays Romeo and Juliet, Henry V and Love's Labour's Lost. There is also a partial sonnet found in the play Edward III.