The 1878 Scottish Cup Final was the fifth final of the Scottish Cup and the final of the 1877–78 Scottish Cup, the most prestigious knockout football competition in Scotland. The match was played at Hampden Park in Crosshill (today part of Glasgow) on 30 March 1878 and was watched by a crowd of 5,000 spectators. The final was contested by the defending champions Vale of Leven and 3rd Lanark RV who had never won the cup. Scotland international forward John McDougall scored the only goal of the game after 65 minutes to give Vale of Leven a 1–0 victory and a second successive cup triumph.