The 2019 Horizon League men's basketball tournament (also known as Motor City Madness) was the final event of the 2018–19 men's basketball season of the Horizon League.
It began on March 5, 2019, and ended on March 12; first-round games were played at the home courts of the top four teams in regular-season league play, with all remaining games at Little Caesars Arena in Detroit.
Northern Kentucky, which shared the regular-season conference title with Wright State, won the tournament and thus received the conference's automatic berth into the NCAA tournament.
The top 8 teams participated in the tournament.
Teams were seeded by record within the conference, with the following tiebreaker system used to seed teams with identical conference records: [1]