Chauncey T. Maggiacomo Jr. (born November 30, 1947) known as "Jocko" or, in high school, as "Chant," is a racing car driver from Poughkeepsie, New York.

His father Chauncey T. Maggiacomo (also nicknamed Jocko) was a famous modified stock car racer in the northeast.

He rose to the professional ranks, winning the 1976 SCCA Trans Am Series championship driving an ex-Roger Penske/Mark Donohue AMC Javelin.

Moving to NASCAR, Maggiacomo started 23 Winston Cup races in 10 seasons, primarily in the Northeastern United States.

According to Maggiacomo, the guilt and shame he felt despite being cleared of wrongdoing, along with the loss of a major sponsorship opportunity, led him to retire.