Largest margins in T20Is by Innings, runs & wickets for Bangladesh vs Sri Lanka
By runs
Winner | Margin | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 83 runs | 178 | 15.2 | v Sri Lanka | Dambulla | 13 Jul 2025 | T20I # 3315 | |
| 75 runs | 211 | 18.4 | v Bangladesh | Sylhet | 18 Feb 2018 | T20I # 651 | |
| 64 runs | 148 | 15.5 | v Bangladesh | Johannesburg | 18 Sep 2007 | T20I # 38 | |
| 45 runs | 177 | 18.0 | v Sri Lanka | Colombo (RPS) | 6 Apr 2017 | T20I # 607 | |
| 28 runs | 175 | 19.4 | v Bangladesh | Sylhet | 9 Mar 2024 | T20I # 2509 | |
| 23 runs | 148 | 20.0 | v Sri Lanka | Mirpur | 28 Feb 2016 | T20I # 513 | |
| 17 runs | 199 | 20.0 | v Bangladesh | Pallekele | 31 Mar 2013 | T20I # 312 | |
| 3 runs | 207 | 20.0 | v Bangladesh | Sylhet | 4 Mar 2024 | T20I # 2494 | |
| 2 runs | 169 | 20.0 | v Bangladesh | Chattogram | 12 Feb 2014 | T20I # 357 |
By wickets
Winner | Margin | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 8 wickets | 166 | 18.1 | v Sri Lanka | Sylhet | 6 Mar 2024 | T20I # 2501 | |
| 8 wickets | 133 | 16.3 | v Sri Lanka | Colombo (RPS) | 16 Jul 2025 | T20I # 3318 | |
| 7 wickets | 155 | 19.0 | v Bangladesh | Pallekele | 10 Jul 2025 | T20I # 3299 | |
| 6 wickets | 156 | 18.5 | v Bangladesh | Colombo (RPS) | 4 Apr 2017 | T20I # 606 | |
| 6 wickets | 194 | 16.4 | v Bangladesh | Mirpur | 15 Feb 2018 | T20I # 648 | |
| 5 wickets | 215 | 19.4 | v Sri Lanka | Colombo (RPS) | 10 Mar 2018 | T20I # 658 | |
| 5 wickets | 172 | 18.5 | v Bangladesh | Sharjah | 24 Oct 2021 | T20I # 1357 | |
| 2 wickets | 160 | 19.5 | v Sri Lanka | Colombo (RPS) | 16 Mar 2018 | T20I # 661 | |
| 2 wickets | 184 | 19.2 | v Bangladesh | Dubai (DICS) | 1 Sep 2022 | T20I # 1755 | |
| 2 wickets | 125 | 19.0 | v Sri Lanka | Dallas | 7 Jun 2024 | T20I # 2646 |
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| 8 wickets | 21 | 133 | 16.3 | 20.0 | v Sri Lanka | Colombo (RPS) | 16 Jul 2025 | T20I # 3318 | |
| 6 wickets | 20 | 194 | 16.4 | 20.0 | v Bangladesh | Mirpur | 15 Feb 2018 | T20I # 648 | |
| 8 wickets | 11 | 166 | 18.1 | 20.0 | v Sri Lanka | Sylhet | 6 Mar 2024 | T20I # 2501 | |
| 6 wickets | 7 | 156 | 18.5 | 20.0 | v Bangladesh | Colombo (RPS) | 4 Apr 2017 | T20I # 606 | |
| 5 wickets | 7 | 172 | 18.5 | 20.0 | v Bangladesh | Sharjah | 24 Oct 2021 | T20I # 1357 | |
| 2 wickets | 6 | 125 | 19.0 | 20.0 | v Sri Lanka | Dallas | 7 Jun 2024 | T20I # 2646 | |
| 7 wickets | 6 | 155 | 19.0 | 20.0 | v Bangladesh | Pallekele | 10 Jul 2025 | T20I # 3299 | |
| 2 wickets | 4 | 184 | 19.2 | 20.0 | v Bangladesh | Dubai (DICS) | 1 Sep 2022 | T20I # 1755 | |
| 5 wickets | 2 | 215 | 19.4 | 20.0 | v Sri Lanka | Colombo (RPS) | 10 Mar 2018 | T20I # 658 | |
| 2 wickets | 1 | 160 | 19.5 | 20.0 | v Sri Lanka | Colombo (RPS) | 16 Mar 2018 | T20I # 661 | |
| 3 wickets | 0 | 121 | 20.0 | 20.0 | v Bangladesh | Chattogram | 14 Feb 2014 | T20I # 358 |
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