The 2019 Fastlane was the fifth Fastlane professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on March 10, 2019, at the Quicken Loans Arena in Cleveland, Ohio, and was the second Fastlane held at this venue after the 2016 event. An event was not held in 2020 due to the scheduling of that year's Super ShowDown event, but Fastlane returned in 2021.

Ten matches were contested at the event, including one on the Kickoff pre-show. In the main event, The Shield (Dean Ambrose, Seth Rollins, and Roman Reigns) defeated Baron Corbin, Bobby Lashley, and Drew McIntyre in a six-man tag team match that was promoted as The Shield's final match together. In other prominent matches, Becky Lynch defeated Charlotte Flair by disqualification, adding her back into the Raw Women's Championship match at WrestleMania 35, and Daniel Bryan retained SmackDown's WWE Championship by defeating Kevin Owens and Mustafa Ali in a triple threat match.