The 1977 NBA World Championship Series was the championship round of the National Basketball Association (NBA)'s 1976–77 season, and the culmination of the season's playoffs. The Western Conference champion Portland Trail Blazers played against the Eastern Conference champion Philadelphia 76ers, with the 76ers holding home-court advantage. Their four regular season meetings had been split evenly, 2–2, with neither side winning away from home. The series was played under a best-of-seven format.