L'edizione 1920-21 della Erste Klasse vide la vittoria finale del Rapid Vienna.
Capocannoniere del torneo fu Josef Uridil (Rapid Vienna), con 35 reti.
- Rapid Vienna Campione d'Austria 1920-21.
- Wiener AC retrocesso in 2. Klasse.
Andata | Prima giornata | Ritorno | | | | | | 05-09 | 4-3 | Admira Vienna-Wacker Vienna | 0-0 | 08-05 | 1-3 | Hakoah Vienna-Rudolfshugel | 1-1 | 10-04 | 2-2 | Hertha Vienna-Rapid Vienna | 1-4 | 26-06 | 1-1 | Wiener AC-Floridsdorfer AC | 3-4 | 12-06 | 0-1 | Wiener Amateur-Wiener AF | 3-2 | 10-04 | 31-10 | 1-0 | 1. Simmering-First Vienna | 0-0 | 13-03 | | Riposava: | Wiener Sport Club | | Andata | Terza giornata | Ritorno | | | | | | 19-09 | 7-1 | Floridsdorfer AC-1. Simmeringer | 1-3 | 02-07 | 4-1 | Hakoah Vienna-Admira Vienna | 1-2 | 13-02 | 4-3 | Rudolfshügel-Rapid Vienna | 3-5 | 03-04 | 0-0 | Wacker Vienna - Wiener AF | 2-2 | 22-05 | 4-0 | Wiener Amateur -First Vienna | 6-0 | 20-02 | 2-2 | Wiener Sport Club -Wiener AC | 2-4 | 29-06 | | Riposava: | Hertha Vienna | | Andata | Quinta giornata | Ritorno | | | | | | 10-10 | 3-3 | Admira Vienna -Hertha Vienna | 1-3 | 13-03 | 3-2 | First Vienna-Floridsdorfer AC | 3-3 | 05-06 | 5-2 | Hakoah Vienna -1. Simmeringer | 1-0 | 29-05 | 6-0 | Rapid Vienna-Wiener Sport Club | 3-2 | 22-05 | 0-0 | Rudolfshügel-Wiener Amateur | 1-2 | 12-06 | 2-0 | Wiener AC-Wacker Vienna | 2-1 | 06-03 | | Riposava: | Wiener AF | | Andata | Settima giornata | Ritorno | | | | | | 24-10 | 0-0 | First Vienna-Wacker Vienna | 2-1 | 22-06] | 2-2 | Floridsdorfer AC - Hertha Vienna | 0-1 | 03-04 | 1-0 | Rapid Vienna -Wiener Amateur | 1-1 | 29-06 | 2-1 | Wiener AC-Admira Vienna | 1-3 | 20-02 | 0-2 | Wiener AF-Hakoah Vienna | 3-2 | 04-06 | 4-1 | Wiener Sport Club -Rudolfshügel | 3-1 | 30-04 | | Riposava: | 1. Simmeringer | | Andata | Nona giornata | Ritorno | | | | | | 21-11 | 1-2 | First Vienna-Hertha Vienna | 2-1 | 03-07 | 1-0 | Floridsdorfer AC-Hakoah Vienna | 0-0 | 22-05 | 4-2 | Rapid Vienna-Wiener AF | 3-1 | 20-03 | 1-2 | 1. Simmeringer-Admira Vienna | 4-1 | 10-04 | 3-1 | Wacker Vienna -Wiener Sport Club | 2-0 | 29-05 | 1-0 | Wiener AC-Wiener Amateur | 3-5 | 08-06 | | Riposava: | Rudolfshügel | | Andata | Undicesima giornata | Ritorno | | | | | | 07-11 | 1-2 | Hertha Vienna-Hakoah Vienna | 2-1 | 12-06 | 05-12 | 2-3 | Admira Vienna-Wiener Amateur | 1-3 | 19-06 | 2-8 | First Vienna-Rapid Vienna | 2-3 | 29-05 | 2-1 | Rudolfshügel-Wiener AC | 2-3 | 2-4 | Wiener AF -1. Simmeringer | 2-2 | 03-04 | 4-0 | Wiener Sport Club -Floridsdorfer AC | 0-1 | 10-04 | | Riposava: | Wacker Vienna | | Andata | Tredicesima giornata | Ritorno | | | | | | 08-12 | 2-1 | Wiener Amateur-Hakoah Vienna | 0-1 | 06-03 | 19-12 | 1-2 | Hertha Vienna-Wiener AF | 2-2 | 29-05 | 02-01-1921 | 0-9 | Wiener AC-Rapid Vienna | 5-7 | 10-04 | 09-01-1921 | 0-1 | Floridsdorfer AC -Wacker Vienna | 2-2 | 19-06 | 1-1 | Rudolfshügel -1. Simmeringer | 2-1 | 06-03 | 5-2 | Wiener Sport Club -Admira Vienna | 2-1 | 03-04 | | Riposava: | First Vienna | | | Andata | Seconda giornata | Ritorno | | | | | | 12-09 | 1-0 | Floridsdorfer AC-Admira Vienna | 3-2 | 29-05 | 2-2 | Rudolfshügel - Hertha Vienna | 3-0 | 19-06 | 1-0 | 1. Simmeringer - Wiener AC | 1-2 | 22-05 | 3-3 | Wacker Vienna - Rapid Vienna | 0-4 | 15-06 | 1-0 | Wiener AF -First Vienna | 0-1 | 07-07 | 2-5 | Wiener Sport Club - Wiener Amateur | 0-2 | 03-03 | | Riposava: | Hakoah Vienna | | Andata | Quarta giornata | Ritorno | | | | | | 03-10 | 3-3 | Admira Vienna-First Vienna | 2-0 | 17-04 | 1-2 | 1. Simmeringer-Rapid Vienna | 2-2 | 14-05 | 2-0 | Wacker Vienna-Rudolfshügel- | 0-3 | 26-06 | 4-1 | Wiener AF-Wiener AC | 4-0 | 13-03 | 3-1 | Wiener Amateur-Hertha Vienna | 2-2 | 22-05 | 1-2 | Wiener Sport Club-Hakoah Vienna | 0-0 | 15-05 | | Riposava: | Floridsdorfer AC | | Andata | Sesta giornata | Ritorno | | | | | | 18-10 | 0-0 | Wacker Vienna-Hakoah Vienna | 1-0 | 13-03 | 31-10 | 2-2 | Wiener AC- Hertha Vienna | 0-5 | 04-06 | 07-11 | 1-4 | Admira Vienna-Rudolfshügel | 1-3 | 05-06 | 08-12 | 2-2 | First Vienna -Wiener Sport Club | 1-0 | 06-03 | 16-01-1921 | 2-3 | 1. Simmeringer - Wiener Amateur | 1-10 | 04-06 | 30-06-1921 | 3-4 | Floridsdorfer AC -Wiener AF | 0-1 | 06-03 | | Riposava: | Rapid Vienna | | Andata | Ottava giornata | Ritorno | | | | | | 12-11 | 0-0 | First Vienna-Wiener AC | 5-0 | 03-04 | 0-0 | Wiener AF -Wiener Sport Club | 0-1 | 19-06 | 14-11 | 1-1 | Hakoah Vienna-Rapid Vienna | 0-1 | 20-02 | 1-1 | Rudolfshügel -Floridsdorfer AC | 2-2 | 4-2 | Hertha Vienna -1. Simmeringer | 0-1 | 30-04 | 5-1 | Wiener Amateur-Wacker Vienna | 1-1 | 03-04 | | Riposava: | Admira Vienna | | Andata | Decima giornata | Ritorno | | | | | | 28-11 | 1-1 | Admira Vienna - Wiener AF | 1-1 | 12-06 | 2-0 | Hertha Vienna - Wacker Vienna | 4-0 | 04-04 | 4-1 | Rapid Vienna-Floridsdorfer AC | 3-3 | 13-03 | 2-1 | Rudolfshügel-First Vienna | 2-2 | 29-06 | 2-2 | 1. Simmeringer- Wiener Sport Club | 0-4 | 12-06 | 1-1 | Wiener AC-Hakoah Vienna | 2-4 | 24-06 | | Riposava: | Wiener Amateur | | Andata | Dodicesima giornata | Ritorno | | | | | | 12-12 | 3-1 | Hakoah Vienna-First Vienna | 1-2 | 19-06 | 1-1 | Hertha Vienna-Wiener Sport Club | 1-3 | 20-02 | 4-2 | Rapid Vienna-Admira Vienna | 3-1 | 06-03 | 3-1 | Wacker Vienna-1. Simmeringer | 1-3 | 20-02 | 1-2 | Wiener AF-Rudolfshügel | 1-1 | 08-05 | 5-2 | Wiener Amateur-Floridsdorfer AC | 1-4 | 13-02 | | Riposava: | Wiener AC | | |
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Vincitore del Campionato Austriaco 1920-1921 |
Rapid Vienna |
7º títolo |