The 1977 Rothmans International Series was an Australian motor racing competition open to Formula 5000 Racing Cars. The series, which was the second Rothmans International Series, was won by Warwick Brown driving a Lola T430 Chevrolet.

Formula 5000 was an open wheel, single seater auto-racing formula that ran in different series in various regions around the world from 1968 to 1982. It was originally intended as a low-cost series aimed at open-wheel racing cars that no longer fit into any particular formula. The '5000' denomination comes from the maximum 5.0 litre engine capacity allowed in the cars, although many cars ran with smaller engines. Manufacturers included McLaren, Eagle, March, Lola, Lotus, Elfin, Matich and Chevron.