The Boys comic series was collected in 12 standard trade paperback volumes.
The collection begins with The Name of the Game, which gathers issues #1–6, and ends with The Bloody Doors Off, which collects issues #66–72. The original monthly series ran for 72 issues, beginning with WildStorm in 2006 and continuing with Dynamite Entertainment after the first publisher dropped it.
The count can be confusing because three of the 12 books are spin-off miniseries incorporated into the numbered trade-paperback sequence: Herogasm, Highland Laddie, and Butcher, Baker, Candlestickmaker. They are part of the standard collected reading set, even though they do not all consist of regular The Boys issues.
Dear Becky is a later eight-issue epilogue and is commonly listed as Volume 13, not part of the original 12-volume sequence. Other formats also use different counts: six Definitive Editions and three oversized hardcover omnibuses repackage the same material in larger groupings.