Joseph Lubega (born January 1, 1982 in Namirembe, Kampala) is a boxer from Uganda, who participated in the 2004 Summer Olympics for his country.
There he was stopped in the first round of the middleweight (75 kg) division by Thailand's eventual bronze medal winner Prasathinphimai Suriya.
Two years earlier Lubega won the silver medal at the 2002 Commonwealth Games in the light heavyweight (81 kg) division.
He qualified for the Athens Games by winning the silver medal at the 1st AIBA African 2004 Olympic Qualifying Tournament in Casablanca, Morocco.
In the final of the event he lost to South African fighter Khostso Motau.