Smallest victories in 2020 in T20Is - Sri Lanka
By runs
Winner | Margin | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 3 runs | 207 | 20.0 | v Bangladesh | Sylhet | 4 Mar 2024 | T20I # 2494 | |
| 4 runs | 161 | 20.0 | v Afghanistan | Dambulla | 17 Feb 2024 | T20I # 2479 | |
| 16 runs | 163 | 20.0 | v Netherlands | Geelong | 20 Oct 2022 | T20I # 1835 | |
| 16 runs | 207 | 20.0 | v India | Pune | 5 Jan 2023 | T20I # 1985 | |
| 20 runs | 190 | 20.0 | v West Indies | Abu Dhabi | 4 Nov 2021 | T20I # 1392 | |
| 23 runs | 171 | 20.0 | v Pakistan | Dubai (DICS) | 11 Sep 2022 | T20I # 1769 | |
| 28 runs | 175 | 19.4 | v Bangladesh | Sylhet | 9 Mar 2024 | T20I # 2509 | |
| 43 runs | 161 | 18.4 | v West Indies | Coolidge | 5 Mar 2021 | T20I # 1128 | |
| 70 runs | 172 | 18.3 | v Ireland | Abu Dhabi | 20 Oct 2021 | T20I # 1331 | |
| 72 runs | 188 | 17.0 | v Afghanistan | Dambulla | 19 Feb 2024 | T20I # 2480 | |
| 73 runs | 163 | 16.1 | v West Indies | Dambulla | 15 Oct 2024 | T20I # 2908 | |
| 79 runs | 153 | 17.1 | v U.A.E. | Geelong | 18 Oct 2022 | T20I # 1832 | |
| 83 runs | 202 | 16.4 | v Netherlands | Gros Islet | 16 Jun 2024 | T20I # 2699 |
By wickets
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| 3 wickets | 0 | 144 | 20.0 | 20.0 | v Zimbabwe | Colombo (RPS) | 14 Jan 2024 | T20I # 2432 | |
| 5 wickets | 1 | 155 | 19.5 | 20.0 | v Australia | Melbourne | 20 Feb 2022 | T20I # 1478 | |
| 4 wickets | 1 | 177 | 19.5 | 20.0 | v Australia | Pallekele | 11 Jun 2022 | T20I # 1564 | |
| 6 wickets | 1 | 174 | 19.5 | 20.0 | v India | Dubai (DICS) | 6 Sep 2022 | T20I # 1759 | |
| 4 wickets | 2 | 133 | 19.4 | 20.0 | v India | Colombo (RPS) | 28 Jul 2021 | T20I # 1206 | |
| 2 wickets | 4 | 184 | 19.2 | 20.0 | v Bangladesh | Dubai (DICS) | 1 Sep 2022 | T20I # 1755 | |
| 4 wickets | 5 | 176 | 19.1 | 20.0 | v Afghanistan | Sharjah | 3 Sep 2022 | T20I # 1757 | |
| 4 wickets | 6 | 136 | 19.0 | 20.0 | v New Zealand | Dambulla | 9 Nov 2024 | T20I # 2939 | |
| 5 wickets | 7 | 172 | 18.5 | 20.0 | v Bangladesh | Sharjah | 24 Oct 2021 | T20I # 1357 | |
| 6 wickets | 9 | 145 | 18.3 | 20.0 | v Afghanistan | Brisbane | 1 Nov 2022 | T20I # 1856 | |
| 9 wickets | 12 | 163 | 18.0 | 20.0 | v West Indies | Dambulla | 17 Oct 2024 | T20I # 2909 | |
| 5 wickets | 18 | 122 | 17.0 | 20.0 | v Pakistan | Dubai (DICS) | 9 Sep 2022 | T20I # 1764 | |
| 9 wickets | 30 | 129 | 15.0 | 20.0 | v Ireland | Hobart | 23 Oct 2022 | T20I # 1841 | |
| 7 wickets | 33 | 82 | 14.3 | 20.0 | v India | Colombo (RPS) | 29 Jul 2021 | T20I # 1207 | |
| 7 wickets | 39 | 97 | 13.3 | 20.0 | v Namibia | Abu Dhabi | 18 Oct 2021 | T20I # 1313 | |
| 9 wickets | 55 | 83 | 10.5 | 20.0 | v Zimbabwe | Colombo (RPS) | 18 Jan 2024 | T20I # 2436 | |
| 8 wickets | 77 | 45 | 7.1 | 20.0 | v Netherlands | Sharjah | 22 Oct 2021 | T20I # 1346 |
Tied matches
Team 1 | Team 2 | Ground | Match Date | Scorecard |
| Australia | Sri Lanka | Sydney Cricket Ground | 13 Feb 2022 | T20I # 1463 |
| New Zealand | Sri Lanka | Eden Park, Auckland | 2 Apr 2023 | T20I # 2039 |
| Sri Lanka | India | Pallekele International Cricket Stadium | 30 Jul 2024 | T20I # 2769 |
Adjust:Most recentPast weekPast MonthPast year4 years10 years25 years
Performances in matches that overlap years are credited to the year in which they occurred - this results in some unknown data, especially in regard to bowling figures