The 1979 Buffalo Bills season was the franchise's 10th season in the National Football League, and 20th overall. Head coach Chuck Knox spent his second season with the Bills in 1979, improving on 1978's record by two games. The Bills were 7–6 with three games left to play, but they lost their final three games to finish with a losing record. (Even if Buffalo had won their final three games, they still would have lost the head-to-head tiebreaker to the Miami Dolphins (who finished 10–6) for the division title.)