| Competition: | First League of the Republika Srpska |
| Season: | 2019–20 |
| Winners: | Krupa 2nd First League title |
| Promoted: | Krupa |
| Relegated: | Sloga Gornje Crnjelovo (withdrew) |
| Matches: | 60 |
| Total Goals: | 144 |
| League Topscorer: | Jovo Lukić (12 goals) |
| Biggest Home Win: | Željezničar Banja Luka 10–0 Sloga Gornje Crnjelovo (17 August 2019) |
| Biggest Away Win: | Sloga Gornje Crnjelovo 0–8 Tekstilac Derventa (10 August 2019) |
| Highest Scoring: | Željezničar Banja Luka 10–0 Sloga Gornje Crnjelovo (17 August 2019) Krupa 7–3 Podrinje Janja (7 September 2019) |
| Longest Wins: | 9 matches Krupa |
| Longest Unbeaten: | 14 matches Krupa |
| Longest Winless: | 7 matches Jedinstvo Brčko |
| Longest Losses: | 4 matches Tekstilac Derventa Slavija Sarajevo |
| Prevseason: | 2018–19 |
| Nextseason: | 2020–21 |
The 2019–20 First League of the Republika Srpska was the twenty-fifth season of the First League of the Republika Srpska, the second tier football league of Bosnia and Herzegovina, since its original establishment and the eighteenth as a second tier league. The season began on 10 August 2019 and ended abruptly on 8 May 2020 due to the COVID-19 pandemic in Bosnia and Herzegovina, with Krupa getting promoted to the Premier League of Bosnia and Herzegovina and no one getting relegated.[1]
Earlier in the season, Sloga Gornje Crnjelovo withdrew from the league after only two rounds.[2]