ɪstˈæblɪʃt ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɛvən, fˈɑːloʊɪŋ ðə kˈɑːmjuːnˌɪst tˈeɪkoʊvɚɹ ɪn bʌlɡˈɛɹiə, spˈɑːɹɾæk wʌz fˈɜːst ɛnɹˈoʊld ɪnðə sˈɛkənd tˈɪɹ ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti tˈuː, bᵻfˌoːɹ ɐtʃˈiːvɪŋ pɹəmˈoʊʃən tə ðɪ ɐ ɡɹˈuːp ɐ jˈɪɹ lˈeɪɾɚ.
Established in 1947, following the communist takeover in Bulgaria, Spartak was first enrolled in the second tier in 1952, before achieving promotion to the A Group a year later.