The 2018 Calcutta Football League Premier Division was the 121st season of the Calcutta Premier Division, a state association football league within the Indian state of West Bengal. The league is divided into two groups – Division A and Division B. The Championship title is awarded only to the Division A winner, while four teams from Division A are relegated to Division B at the end of the season and four teams from Division B are simultaneously promoted to Division A for the next season. The fixtures of Division A and Division B started on 3 August and 5 August 2018 respectively.