ɐnˈʌðɚ θˈiəɹi klˈeɪm ðæt nˈeɪm sˈædʒən ɪz ʌv slˈɑːvɪk ˈɔːɹɪdʒˌɪn, sˈɪns ðə slˈɑːvɪk vˈɪlɪdʒ wɪð sˈɪmɪlɚ nˈeɪm zˈædʒən wʌz ɹᵻkˈoːɹdᵻd ɪn vˌɛspɹɪmˈiənsɪs kˈaʊnti ɪn wˈʌn θˈaʊzənd θɹˈiːhˈʌndɹɪd nˈaɪnti ˈeɪt.
Another theory claim that name Sajan is of Slavic origin, since the Slavic village with similar name Zajan was recorded in Vesprimiensis county in 1398.