Wiener Stadtliga U23, round 16
Sun, 07.03.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. SC Mannswörth 
Sun, 07.03.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 17
Sun, 14.03.2021, tba | Sportplatz Post
Post SV vs. First Vienna FC U23 
Sun, 14.03.2021, tba | Sportplatz Post
Wiener Stadtliga U23, round 18
Sun, 21.03.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. SV Donau 
Sun, 21.03.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 19
Sun, 28.03.2021, tba | Sportplatz Slovan HAC
SK Slovan HAC vs. First Vienna FC U23 
Sun, 28.03.2021, tba | Sportplatz Slovan HAC
Wiener Stadtliga U23, round 20
Sun, 11.04.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. A-XIII Auhof Center 
Sun, 11.04.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 21
Sun, 18.04.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. ASV 13 
Sun, 18.04.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 22
Sun, 25.04.2021, tba | Union Mauer
Sportunion Mauer vs. First Vienna FC U23 
Sun, 25.04.2021, tba | Union Mauer
Wiener Stadtliga U23, round 23
Sun, 02.05.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. FC Stadlau 
Sun, 02.05.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 24
Sun, 09.05.2021, tba | Sportplatz FavAC
Favoritner AC vs. First Vienna FC U23 
Sun, 09.05.2021, tba | Sportplatz FavAC
Wiener Stadtliga U23, round 25
Sun, 16.05.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. WAF Vorwärts Brigittenau 
Sun, 16.05.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 30
Mon, 24.05.2021, tba | Sportplatz Wienerberg
Wienerberg vs. First Vienna FC U23 
Mon, 24.05.2021, tba | Sportplatz Wienerberg
Wiener Stadtliga U23, round 26
Sun, 30.05.2021, tba | Sportplatz Donaufeld
SR Donaufeld vs. First Vienna FC U23 
Sun, 30.05.2021, tba | Sportplatz Donaufeld
Wiener Stadtliga U23, round 27
Sun, 06.06.2021, tba | Naturarena Hohe Warte
First Vienna FC U23 vs. ASK Elektra 
Sun, 06.06.2021, tba | Naturarena Hohe Warte
Wiener Stadtliga U23, round 28
Sun, 13.06.2021, tba | Sportplatz Gerasdorf
SV Gerasdorf Stammersdorf vs. First Vienna FC U23 
Sun, 13.06.2021, tba | Sportplatz Gerasdorf
Wiener Stadtliga U23, round 29
Sun, 20.06.2021, tba | Naturarena Hohe Warte