The 1978 Colgate-Palmolive Grand Prix was a professional tennis circuit held that year. It consisted of four Grand Slam tournaments, the Grand Prix tournaments and the Nations Cup, a team event. In addition eight World Championship Tennis (WCT) tournaments, a separate tennis circuit prior to 1978, were incorporated into the Grand Prix circuit.Jimmy Connors won 10 of the 84 tournaments which secured him the first place in the Grand Prix points ranking. However he did not play enough tournaments (13) to qualify for largest share ($300,000) of the bonus pool, which instead went to third–ranked Eddie Dibbs.
The tournaments listed above were divided into nine point categories. The highest points were allocated to the Grand Slam tournaments; French Open, the Wimbledon Championships, the US Open and the Australian Open. Points were allocated based on these categories and the finishing position of a player in a tournament. The points table is based on a 32 player draw. No points were awarded to first-round losers and advancements by default were equal to winning a round. The points allocation, with doubles points listed in brackets, is as follows: