The tenth and final season of the CBS police procedural drama series Hawaii Five-0 premiered on September 27, 2019, for the 2019–20 television season. CBS renewed the series for a tenth season in May 2019. The season contained 22 episodes and concluded on April 3, 2020. Four characters from Magnum P.I. guest starred in episode 12, which was a two-part crossover that concluded on Magnum P.I. As with season 9, several characters continued to make guest appearances on Magnum P.I.