Mr. William Shakespeare's Comedies, Histories, & Tragedies is a collection of plays by William Shakespeare, commonly referred to by modern scholars as the First Folio, published in 1623, about seven years after Shakespeare's death. It is considered one of the most influential books ever published.
Printed in folio format and containing 36 of Shakespeare's plays, it was prepared by Shakespeare's colleagues John Heminges and Henry Condell. It was dedicated to the "incomparable pair of brethren" William Herbert, 3rd Earl of Pembroke, and his brother Philip Herbert, Earl of Montgomery (later 4th Earl of Pembroke).