The original company was founded in 1922 and for five years only in the local leagues dispute. During the Fascist period participates in various regional and provincial championships, to remain inactive during the war. And reconstitution in 1945 sharpened the FIGC. After two years in Prima Divisione Lombardy, is promoted to Serie C, where it remains only in the 1947-1948 season.
In 1952, the company gives up and remains inactive until 1968, when it is re-established themselves as participants in youth leagues. In 1972, forms a team that plays in the Terza Categoria. From 1981 it began a slow but steady rise of the minor leagues, until it wins Eccellenza Lombardy Girone B in 2001. From the 2001-02 it participates in Serie D, to achieve different finishes of medium ranking: best result obtained so far are the playoffs in the 2004-2005 and 2010-11 season.
1922 - Birth of Unione Sportiva (en: Sports Union) Olginatese.
1922-27 - Sport activity in the local area.
1927 - The U.S. Olginatese is affiliated to the U.L.I.C. Committee "Brianteo" of Monza and enrolled in the championship Prima Categoria (age limit 21 years old not yet reached).
1927-28 - 4th in group A of Prima Categoria U.L.I.C. Monza Committee.
1928- The championships run by the U.L.I.C. Committee of Como are expanded with the entry of newly formed companies. The U.S. Olginatese does not continue with Monza and enrolled in Como, always in Prima Categoria.
1938 - It is affiliated to FIGC with the denomination U.S. Olginatese and enrolled in the Seconda Divisione Lombardy.
1938-39 - 1st in group B of Seconda Divisione Lombardy, go to the semifinals. In the semi-final encounters Pro Palazzolo but not enough to beat the first two (2-1 and 2-3 outside) and on May 28 in Bergamo wins 2-1. In the final, was beaten by Luino with a double 1-2. Promoted to Prima Divisione.