Tracey Robert Mann (born December 17, 1976) is an American businessman and politician who has served as the U.S. representative from Kansas's 1st congressional district since 2021. The district, popularly known as "the Big First," includes parts of 63 counties in central and western Kansas and is the seventh-largest district in the nation that does not cover an entire state. Mann served as the 50th lieutenant governor of Kansas from 2018 to 2019. He was appointed by Governor Jeff Colyer in February 2018, after Colyer ascended from the lieutenant governorship upon Sam Brownback's resignation.