Marítimo was founded on 20 September 1910 as
Club Português de Sport Marítimo, by Cândido Fernandes de Gouveia. The club adopted the red and green colours of the new Republican flag of Portugal to distinguish themselves from rivals
Club Sports da Madeira, who used the blue and white colours of the old monarchy flag which had been replaced 15 days earlier. The name
Marítimo, meaning Maritime in English, was used to reflect the fact that many of the team's players were workers of the nearby Funchal docks, a prominent employer at the time. The first ever match for Marítimo was a 2–1 win against Santa Clara, a select team composed of workers of the Western Telegraph Company. Soon after they began playing teams of sailors from visiting British ships. José Rodrigues Barrinhas, an old-fashioned attacking centre-half, made a name for himself in these games and in matches against rivals CS Madeira. In 1921–22, the Portuguese clubs started playing a new national competition. The
Campeonato de Portugal, played on a knock-out-basis (similar to the current
Taça de Portugal), was the first national competition. After competing in the regional championships, the regional winners competed together to pick the Champion of Portugal. Marítimo make 13 appearances in the 17 editions of the competition. After several attempts, the club finally won the
Campeonato de Portugal in 1925–26. In the semi-final against
Porto, Marítimo won 7–1, and in the final against
Belenenses Marítimo won 2–0. It was after this great achievement that Marítimo was called "The Greatest of the Islands". In the early 1930s, the club faced a serious financial crisis, although this did not affect its supremacy in the regional competitions. However, in 1934, a new national competition called
Primeira Liga was created, in which teams outside the continental territory were excluded. Nevertheless, in 1938–39 the teams from the islands started to participate in the
Taça de Portugal, after the champions of
Madeira and
Azores played a qualification round between themselves. Being excluded from competing in the
Primeira Liga, the club continued playing in regional competitions. It was in this period that Marítimo won many of the Regional Championships. In 1950, the team went through an amazing tour of Africa in which they made some great achievements. After arduous negotiations with the
Portuguese Football Federation, it was established that the winner in the regional championship of 1972–73 could play a qualifying round with the last of the
Segunda Divisão and the first of the
Terceira Divisão. Marítimo won that regional championship and started to participate in the national championships. They therefore became the first team from a Portuguese island to participate in the national championship. Maritimo's record of 35 Madeira Championships won between 1916 and 1973 still stands. The consequences of long years without being able to compete regularly in national competitions were visible in the beginning. The fact that the island was not able to put teams in national competitions showed the discrepancies in terms of infrastructures and organization between the regional and national reality. Yet in the 1976–77 season the club wins the
II Divisão and rises to the
Portuguese First Division, remaining there for over three seasons. Due to the existing semi-professionalism and some logistical difficulties, the club is relegated to
Second Division in 1980–181, rising immediately next season, winning for the second time the
II Divisão. After two seasons the club returns to
Primeira Liga in the 1982–83 season. Since then the club has remained in the
Primeira Liga, consolidating its status as a team that consistently finishes in the top ten and competes for European qualification. Until the early 1990s, the club's best result in the Primeira Liga was ninth place in the 1987–88 season. The entry of a young coach, ambitious Brazilian
Paulo Autuori, brought greater internal organisation and attractive attacking football, so that in the 1991–92 campaign the club reached seventh place. The 1992–93 season saw a "wonder-trio" (
Ademir,
Edmilson and
Jorge Andrade) drive the club to have the third best attack in the league, with 56 goals. European qualification came on the final day of the season, with a 3–2 victory against
Boavista earning a 5th place finish and qualification to the
UEFA Cup. Again the club was a pioneer, being the first Portuguese island-based team to achieve qualification for European competitions. That same season is also notable for the home wins against
Sporting (4–2) and
Gil Vicente (7–0). The club's first foray in Europe saw them defeated by
Royal Antwerp in the first round of the
1993–94 UEFA Cup, however another fifth place finish at the end of the 1993–94 league campaign saw an immediate return to European competition for the
1994–95 UEFA Cup. A 1–0 win over
Aarau saw the club earn their first victory European victory, before being eliminated by eventual finalists
Juventus in the second round, with a 1–3 defeat on aggregate. Another great achievement was made during the season when the club qualified to the
Taça de Portugal final for the first time in its history, after defeating
Porto in the semi-finals 1–0. Marítimo disputed the final against
Sporting, but lost
2–0 to a team featuring stars such as
Luís Figo,
Ricardo Sá Pinto,
Ivaylo Yordanov and
Krasimir Balakov. Six years later, in the 2000–01 season, Marítimo achieved another final appearance, after defeating
Boavista in the semi-final 1–0. This time Marítimo played the final against
Porto, losing again 2–0. Throughout the early 2000s, the club achieved consistent top six finishes and featured regularly in European competitions, with memorable victories against
Leeds United and
Rangers. In the 2012–13 season, Marítimo qualified for the
Europa League group stages for the first time, finishing third with a win against
Club Brugge and two draws against
Newcastle United. In the 2014–15 season, Maritimo reached the
Taça da Liga final for the first time ever, beating Porto in the semi-final but then losing to Benfica 2–1 in the
final. The following season they repeated this feat, playing against Benfica again in the final, but losing
6–2. From then, the team suffered a steady decline, narrowly escaping relegation in the
2020–21 season, by 1 point, before finally yielding in
2022–23 ending a 38-year streak in the top division. The team almost bounced straight back in the
2023–24 season, missing out on the promotion play-offs due to head-to-head results with third-place
AVS. After three season in the
Segunda Liga, on 26 April 2026, Marítimo finally secured their return to the top flight with 2–1 victory away to
Benfica B, infront of 1,312 visiting Verde-Rubros supporters. A week later, on 1 May, Marítimo were crowned as league champions of the Segunda Liga following a 3–2 home victory over Leixões, infront of more than 10,000 fans at
Estádio do Marítimo. ==Colours and crest==