Johnny Lovo (died 1930) was an Italian-American mafioso who was boss of the Chicago Outfit from 1920 to 1930, succeeding Louis Costillo and precedint Tony Camonte.
Lovo was a lieutenant of Chicago crime lord "Big" Louis Costillo until 1920, when the ambitious Lovo had his old-fashioned boss murdered by Tony Camonte. Lovo took over the South Side of Chicago and entrusted Camonte with managing the Outfit's lucrative bootlegging racket (3,000 saloons and 500,000 customers), although he was averse to challenging the rival North Side Gang. Camonte disobeyed Lovo's orders by going to war with the North Side and expanding his rackets, and Lovo soon became boss in name only. After Camonte seduced Lovo's mistress Poppy, a jealous Lovo failed to have Camonte killed. Suspecting Lovo's involvement, Camonte had the local barber call Lovo (while posing as a hitman) to inform him that the hit had failed, and he made sure to be present when Lovo answered the call. Though Lovo told Camonte that the caller had dialed the wrong number, Camonte forced Lovo to confess his guilt and had his right-hand man Guino Rinaldo execute Lovo.