Non-fiction editor Rory Scarfe bought world rights at auction from Felicity Blunt at Curtis Brown. The book, Alfie, will be published in autumn 2012.
It will offer an account of Boe's childhood as one of nine children growing up in the north of England, how he was talent spotted while working as a mechanic and how he rose to perform around the world. He currently stars as Jean Valjean in the London run of "Les Miserables".
Scarfe said: "Alfie has an amazing story to tell. He is a greatly loved and admired musician who has brought classical music and musical theatre to a new audience around the world. This promises to be a personal, touching and hugely entertaining book. We're extremely proud to be publishing this book with Alfie and looking forward to working with him to bring it to a wide readership next autumn."
Boe said: "It will talk of the people who inspired me and maybe touch a little bit on the harder times of my life. There'll be a lot of laughter and also some gritty tales of which all have added to the wrinkles or laughter lines around my eyes.”