The 2004–05 Terceira Divisão season was the 55th season of the competition and the 15th season of recognised fourth-tier football in Portugal.
[1] The league was contested by 118 teams in 7 divisions of 10 to 18 teams.
[1] The last Açores team in the Segunda Divisão competed against the Açores champions of the Terceira Divisão.
Madalena were promoted to the Segunda Divisão and Lusitânia relegated to the Terceira Divisão.
[2]