The 1977 Baltimore Colts season was the 25th season for the team in the National Football League (NFL). Led by third-year head coach Ted Marchibroda, the Colts finished with 10 wins and 4 losses, tied for first in the AFC East division with the Miami Dolphins. The Colts had the tiebreaker over Miami based on better conference record (9–3 to 8–4), and the Dolphins missed the playoffs.