__.__.1921
foundation as Sportni Klub Trbovlje Zagorje
18.06.1923
seperation of the football-section as FC Jupiter Zagorje
25.07.1924
dissolution and integration in Sportnega Kluba Prosveta Zagorje
__.__.1930
renaming in Sportni Klub Zagorje
__.__.1946
renaming in NK Proletarac Zagorje
__.__.1965
renaming in NK Zagorje
__.__.1991
renaming in NK Elektroelement Zagorje
__.__.1994
renaming in NK Zagorje