Largest margins by Sierra Leone in T20Is by Innings, runs & wickets
By runs
Winner | Margin | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 168 runs | 190 | 10.4 | v Ivory Coast | Abuja | 23 Nov 2024 | T20I # 2974 | |
| 109 runs | 156 | 12.3 | v Eswatini | Abuja | 28 Nov 2024 | T20I # 2995 | |
| 18 runs | 44 | 7.2 | v Ghana | Kigali | 5 Dec 2022 | T20I # 1939 | |
| 4 runs | 53 | 5.0 | v Eswatini | Kigali | 5 Dec 2022 | T20I # 1936 | |
| 2 runs | 110 | 20.0 | v Rwanda | Lagos | 10 Oct 2023 | T20I # 2308 |
By wickets
Winner | Margin | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 9 wickets | 36 | 4.2 | v Cameroon | Benoni | 10 Dec 2023 | T20I # 2392 | |
| 8 wickets | 82 | 10.0 | v Gambia | Kigali | 6 Dec 2022 | T20I # 1940 | |
| 8 wickets | 38 | 2.5 | v Mali | Benoni | 9 Dec 2023 | T20I # 2389 | |
| 6 wickets | 90 | 12.1 | v Cameroon | Rwanda | 7 Nov 2021 | T20I # 1401 | |
| 6 wickets | 73 | 18.0 | v Ghana | Lagos | 15 Oct 2023 | T20I # 2316 | |
| 5 wickets | 97 | 17.2 | v Mozambique | Rwanda | 5 Nov 2021 | T20I # 1395 | |
| 4 wickets | 136 | 19.0 | v St Helena | Abuja | 26 Nov 2024 | T20I # 2984 | |
| 2 wickets | 116 | 19.4 | v Botswana | Benoni | 15 Dec 2023 | T20I # 2403 | |
| 1 wicket | 147 | 19.2 | v Cameroon | Rwanda | 2 Dec 2022 | T20I # 1930 |
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| 8 wickets | 103 | 38 | 2.5 | 20.0 | v Mali | Benoni | 9 Dec 2023 | T20I # 2389 | |
| 9 wickets | 94 | 36 | 4.2 | 20.0 | v Cameroon | Benoni | 10 Dec 2023 | T20I # 2392 | |
| 8 wickets | 60 | 82 | 10.0 | 20.0 | v Gambia | Kigali | 6 Dec 2022 | T20I # 1940 | |
| 6 wickets | 47 | 90 | 12.1 | 20.0 | v Cameroon | Rwanda | 7 Nov 2021 | T20I # 1401 | |
| 5 wickets | 16 | 97 | 17.2 | 20.0 | v Mozambique | Rwanda | 5 Nov 2021 | T20I # 1395 | |
| 6 wickets | 12 | 73 | 18.0 | 20.0 | v Ghana | Lagos | 15 Oct 2023 | T20I # 2316 | |
| 4 wickets | 6 | 136 | 19.0 | 20.0 | v St Helena | Abuja | 26 Nov 2024 | T20I # 2984 | |
| 1 wicket | 4 | 147 | 19.2 | 20.0 | v Cameroon | Rwanda | 2 Dec 2022 | T20I # 1930 | |
| 2 wickets | 2 | 116 | 19.4 | 20.0 | v Botswana | Benoni | 15 Dec 2023 | T20I # 2403 | |
| 6 wickets | 0 | 100 | 20.0 | 20.0 | v Nigeria | Lagos | 19 Oct 2021 | T20I # 1317 |
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