Atromitos FC was officially founded in May 1923 when Kalomvounis, Petos, Glykofridis, Stathopoulos, Synodinos, Rigopoulos, Stamatopoulos, and other students living in Victoria Square (which was then called Kyriakou Square) decided to form a football team. That same year, Vaggelis Stamatis, a mathematics teacher and member of the Panhellenic football league, joined the administrative board of Atromitos. Because of his prominence in pre-war Greek football history, Stamatis' involvement increased the new team's stature in Athenian football. In 1924, Atromitos was accepted into the Greek football league. At the time, Atromitos played at the Panellinios football grounds, Panathinaikos, and in Aris park. During their first season in the league's first division, they ended in third place (behind Panathinaikos and AEK).

In 1928, they defeated Goudi 4-3 in the final game at Rouf stadium to become champions of Athens. As champions of Athens, they took part that same year in the first Panhellenic championship, which was organised by EPO. On May 24, 1928, they were beaten 3-1 by Aris (who later became champions) in an away game, and were defeated again on June 3 by Ethnicos Pireaus 5-0. On June 10, They managed a draw at home against Ethnicos 1-1, before losing again to Aris 3-1 seven days later. During the following two years, Atromitos stayed in the upper part of the first division of Athens, and in 1929, they finished third behind Panathinaikos and AEK. They repeated the feat in 1930. In 1932, Iosiph Chouroukchoglou and Nikolaos Epioglou decided to move Atromitos to the town Peristeri. Earlier, Atromitos was located in the same area as Panathinaikos, and they had found it hard to establish a large fan base or develop a unique identity.

Atromitos played in the second division until May 1972, when they, under the coaching of Savva Papazoulou, were re-promoted to first division. This division, though, proved difficult to handle, and they were demoted the following year. In 1975, a better-prepared Atromitos returned to the first division with a large fanbase, and ended the year in 13th place, securing their spot in the top flight. In 1976 they improved to end the season in 9th place, the best in their history. By 1981, Atromitos had succeeded in attracting renowned players such as Stylianopoulos, Alvarez, Toskas, and Athanasopoulos. However, despite high expectations, Atromitos played for the last time in the top games and once more returned to the lower divisions. After years of playing in the third division, Atromitos won promotion back to the second division in May 2002 by beating Levadiakos at Patra stadium.

Source: en.wikipedia.org