| Season: | 1928 |
| Nextseason: | 1929 |
The 1928 National Championship (Serbo-Croato-Slovenian: Državno prvenstvo 1928. / Државно првенство 1928.) proclaimed Gradanski Zagreb once again as the reigning champions, with Hajduk and BSK following closely behind.
The champions of the Belgrade, Split and Zagreb subassociations qualified directly to the final phase, while the second place teams of Belgrade and Zagreb, along with the champions of the rest of the subassociations, played a two-legged elimination round.
The representatives were:
Qualifying round:
The qualifiers were played in both, home and away matches, and were played on June 10 the first leg, and on June 17 the second. Primorje and SAŠK needed an extra match which was played on June 18 in Sarajevo.[1]
Champions:
HŠK GRAĐANSKI
Final goalscoring position, number of goals, player/players and club.[2]