1972 San Francisco 49ers season Tags: National Football League Season.The 1972 San Francisco 49ers season was the team’s 23rd year with the National Football League. The 49ers appeared in the playoffs for the third consecutive year each time being eliminated by the Dallas Cowboys. thumbnail coach Dick Nolan (American football) team San Francisco 49ers year 1972-01-01T00:00:00+02:00 Learn more... Loading...