2020–21 Serbian First League
The 2020–21 Serbian First League was the 16th season of the Serbian First League since its establishment.
League format
The league consisted of 18 teams: ten teams from the 2019–20 Serbian First League and eight new teams promoted from 2019–20 Serbian League. Teams played each other in double round-robin format, with top two teams being promoted to Serbian SuperLiga and bottom eight teams being relegated to Serbian League.Team changes
The following teams have changed division since the 2019–20 season.To First League
Promoted from Serbian League- Borac 1926
- Dubočica
- IMT
- Jagodina
- Loznica
- [FK FK Radnički Pirot|Radnički Sremska Mitrovica|Radnički Sremska Mitrovica]
- Sloga
- Železničar
From First League
Relegated to Serbian LeaguePromoted to 2020–21 Serbian SuperLiga
Teams
| Team | City | Stadium | Capacity |
| Borac 1926 | Čačak | Čačak City Stadium | 8,000 |
| Budućnost Dobanovci | Dobanovci | FK Budućnost Dobanovci Stadium | 1,000 |
| Dinamo | Vranje | Stadion Yumco | 4,000 |
| Dubočica | Leskovac | Leskovac City Stadium | 7,000 |
| Grafičar | Belgrade | Topčiderska zvezda | 1,000 |
| IMT | Belgrade | Stadion FK IMT | 1,150 |
| Jagodina | Jagodina | Jagodina City Stadium | 15,000 |
| Kabel | Novi Sad | FK Kabel Stadium | 2,000 |
| Kolubara | Lazarevac | FK Kolubara Stadium | 2,500 |
| Loznica | Loznica | Lagator Stadium | 5,000 |
| Radnički 1923 | Kragujevac | Čika Dača | 15,100 |
| Radnički | Pirot | Stadion Dragan Nikolić | 13,816 |
| Radnički | Sremska Mitrovica | Stadion FK Radnički | 2,000 |
| Sloga | Kraljevo | Kraljevo City Stadium | 4,000 |
| [FK FK Trayal Kruševac|Trayal Kruševac|Trayal] | Kruševac | FK Trayal Stadium | 1,500 |
| Zemun | Belgrade | Zemun Stadium | 9,588 |
| Žarkovo | Belgrade | FK Žarkovo Stadium | 610 |
| Železničar | Pančevo | SC Mladost | 1,200 |
Personnel, Kits and Main sponsor
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players and Managers may hold more than one non-FIFA nationality.| Team | Head coach | Captain | Kit manufacturer | General Sponsor | |||||||||||
| Borac 1926 |  Foreign players
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