Thomas Obi (born 1932) is a Nigerian sprinter. He competed in the men's 100 metres at the 1956 Summer Olympics. He finished second in the 1958 British Empire and Commonwealth Games 4×110 yards Relay (with Jimmy Omagbemi, Smart Akraka, and the non-Olympian Victor Odofin). At the 1958 British Empire and Commonwealth Games Obi was eliminated in the semi-finals of the 120 yards hurdles and in the quarter-finals of the 100 yards.