CM Punk: Best in the World is a 2012 documentary film released as part of a three-DVD set on October 29, 2012, by World Wrestling Entertainment (WWE). The documentary chronicles the career of WWE wrestler CM Punk. Punk collaborated with WWE to make the documentary, contributing hours of interview content to the film. The collaboration coincided with Punk's famous 434-day reign as WWE Champion. The documentary chronicles Punk's early days as a professional wrestler with backyard and independent wrestling covered extensively with footage from IWA Mid-South and Ring of Honor (ROH) all the way to his rise to stardom in WWE.

This is the third documentary about CM Punk, the first being Before They Were Wrestling Stars: CM Punk (which was distributed by Big Vision Entertainment) which chronicles some of Punk's best works from ROH and Full Impact Pro (FIP).