List of Clube de Regatas do Flamengo seasons

Flamengo's football team was only established after a group of ten dissatisfied players from Fluminense broke away from that club following a dispute with its board.

Also, establishing a land sports department at Flamengo was preferable to joining football rivals Botafogo or the all-English club Paysandu (now, Paissandu).

Since then, Flamengo established themselves as one of Brazil's most successful sports clubs in the 20th century during the era of state leagues in Brazil when they captured several Campeonato Carioca (Rio de Janeiro state league) titles prior to the establishment of the first Brazilian national football championship in 1959.

Since then, they have remained successful in Brazilian football, having won seven times the Campeonato Brasileiro Série A,[2] the 1987 Copa União (a Brasileirão title contested by Sport, although CBF recognizes both champions,[3] the STF does not.

Flamengo's fiercest and longest-standing rivalries are with the other "Big Four" of Rio de Janeiro: Fluminense, Botafogo and Vasco da Gama.