The 1977–78 season was Colchester United's 36th season in their history and first season back in third tier of English football, the Third Division following promotion the previous season. Alongside competing in the Third Division, the club also participated in the FA Cup and the League Cup.
Colchester made steady progress under Bobby Roberts ending the campaign in a strong eighth in the league table. They were eliminated in the League Cup by Leeds United in the third round, while they could not capitalise on last seasons FA Cup success, exiting the competition in the second round to Watford.
Season overview
A strong start to the season saw Colchester reach the top of the Third Division table following four wins in the first five games. A slump in form ended their promotion hopes following one win in ten games after January and the sale of Colin Garwood to Portsmouth for £25,000. They ended the season in eighth position, eight points behind promoted Preston North End.