The 2021 League of Ireland season was Bohemian Football Club's 131st year in their history and their 37th consecutive season in the League of Ireland Premier Division since it became the top tier of Irish football. Bohemians participated in the FAI Cup, the national domestic cup competition, reaching their first final since 2008. Bohemians also competed in the inaugural UEFA Europa Conference League where they set a record for Irish clubs with four consecutive victories in European competition.