Determining the absolute fastest quarterback in NFL history often comes down to evaluating top-end speed during open-field scrambles versus official testing metrics like the 40-yard dash at the NFL Scouting Combine. Historically, players like Michael Vick redefined the position with electrifying speed, famously clocked at a blazing 4.33 seconds in the 40-yard dash during his prime, making him a terror for opposing defenses and widely regarded as the most dynamic open-field runner the position has ever seen. In terms of official combine testing records, prospects like Reggie McNeal ran a 4.35, while modern superstars like Lamar Jackson opted out of the formal combine 40-yard dash but terrorized defenses with record-breaking rushing seasons, including a historic 1,203-yard rushing campaign. Other notable speedsters include Robert Griffin III, who ran a stunning 4.41 seconds, and Anthony Richardson, who clocked a 4.43. Ultimately, while players like Vick and Jackson achieved legendary status for game speed, the combination of raw acceleration and breakaway capability places dual-threat icons at the pinnacle of quarterback speed history.