Highest totals by Leinster Lightning in T20s
Highest totals
Team | Score | Overs | RR | Inns | Opposition | Ground | Result | Match Date | Scorecard |
| 260/3 | 20.0 | 13.00 | 1 | v NW Warriors | Dublin | won | 28 Jul 2022 | Twenty20 | |
| 247/4 | 20.0 | 12.35 | 1 | v Munster Reds | Dublin | won | 16 Jun 2017 | Twenty20 | |
| 221/5 | 18.3 | 11.94 | 2 | v Munster Reds | Dublin | won | 27 Jul 2022 | Twenty20 | |
| 207/5 | 20.0 | 10.35 | 1 | v Knights | Dublin | won | 6 Jul 2018 | Twenty20 | |
| 202/4 | 18.4 | 10.82 | 2 | v NW Warriors | Dublin | won | 9 Jul 2025 | Twenty20 | |
| 196/8 | 20.0 | 9.80 | 1 | v Munster Reds | Cork | won | 7 Aug 2024 | Twenty20 | |
| 193/5 | 20.0 | 9.65 | 1 | v NW Warriors | Bready | won | 2 Jul 2025 | Twenty20 | |
| 192/5 | 17.1 | 11.18 | 2 | v Knights | Dublin | won | 3 May 2024 | Twenty20 | |
| 191/5 | 18.3 | 10.32 | 2 | v Knights | Dublin | won | 3 Aug 2023 | Twenty20 | |
| 188/8 | 19.2 | 9.72 | 2 | v Knights | Dublin | won | 10 Jul 2025 | Twenty20 | |
| 188/6 | 20.0 | 9.40 | 1 | v Munster Reds | Comber | lost | 27 May 2022 | Twenty20 | |
| 187/6 | 20.0 | 9.35 | 2 | v Munster Reds | Dublin | lost | 8 Jul 2018 | Twenty20 | |
| 183/7 | 20.0 | 9.15 | 2 | v Munster Reds | Dublin | won | 22 Jun 2019 | Twenty20 | |
| 182/3 | 20.0 | 9.10 | 1 | v NW Warriors | Dublin | won | 7 Jul 2018 | Twenty20 | |
| 182/7 | 20.0 | 9.10 | 1 | v NW Warriors | Dublin | lost | 20 Jun 2021 | Twenty20 | |
| 178/6 | 20.0 | 8.90 | 1 | v Knights | Belfast | won | 25 May 2018 | Twenty20 | |
| 176 | 20.0 | 8.80 | 1 | v Knights | Comber | won | 29 May 2022 | Twenty20 | |
| 171/4 | 15.1 | 11.27 | 2 | v Munster Reds | Dublin | won | 1 Aug 2023 | Twenty20 | |
| 169/4 | 15.5 | 10.67 | 2 | v Munster Reds | Cork | won | 19 Jun 2025 | Twenty20 | |
| 167 | 20.0 | 8.35 | 1 | v Knights | Bready | won | 26 Jun 2021 | Twenty20 | |
| 164/4 | 18.3 | 8.86 | 2 | v Munster Reds | Dublin | won | 16 May 2024 | Twenty20 | |
| 163 | 17.1 | 9.49 | 2 | v Knights | Cork | lost | 6 Jun 2023 | Twenty20 | |
| 160/2 | 16.0 | 10.00 | 2 | v Munster Reds | Dublin | won | 8 Jul 2025 | Twenty20 | |
| 160/6 | 20.0 | 8.00 | 1 | v Munster Reds | Dublin | won | 18 May 2018 | Twenty20 | |
| 158/3 | 17.1 | 9.20 | 2 | v Knights | Dublin | won | 9 Jun 2017 | Twenty20 | |
| 158 | 19.4 | 8.03 | 2 | v NW Warriors | Comber | lost | 28 May 2022 | Twenty20 | |
| 157/5 | 20.0 | 7.85 | 1 | v Munster Reds | Cork | lost | 8 Jun 2023 | Twenty20 | |
| 156 | 18.5 | 8.28 | 2 | v Knights | Wicklow | lost | 10 Sep 2024 | Twenty20 | |
| 153/7 | 20.0 | 7.65 | 1 | v Knights | Cork | lost | 17 Jun 2025 | Twenty20 | |
| 153/8 | 20.0 | 7.65 | 1 | v NW Warriors | Bready | won | 26 May 2017 | Twenty20 | |
| 152/8 | 20.0 | 7.60 | 2 | v Knights | Dublin | lost | 19 Jun 2021 | Twenty20 | |
| 150/8 | 20.0 | 7.50 | 1 | v Knights | Belfast | won | 26 Jun 2025 | Twenty20 | |
| 149/2 | 12.5 | 11.61 | 2 | v Warriors | Dublin | won | 2 May 2024 | Twenty20 | |
| 149/3 | 15.1 | 9.82 | 2 | v Munster Reds | Dublin | won | 18 Jun 2021 | Twenty20 | |
| 149/8 | 18.0 | 8.27 | 1 | v Munster Reds | Bready | tied | 10 Jun 2022 | Twenty20 | |
| 147/2 | 15.2 | 9.58 | 2 | v NW Warriors | Belfast | won | 25 Jun 2025 | Twenty20 | |
| 142/9 | 20.0 | 7.10 | 1 | v Knights | Belfast | won | 4 Jun 2024 | Twenty20 | |
| 138/4 | 15.0 | 9.20 | 2 | v Munster Reds | Dublin | won | 1 May 2024 | Twenty20 | |
| 136/9 | 20.0 | 6.80 | 1 | v Knights | Belfast | won | 23 Jun 2017 | Twenty20 | |
| 134/6 | 15.4 | 8.55 | 2 | v NW Warriors | Cork | won | 18 Jun 2025 | Twenty20 | |
| 133/9 | 20.0 | 6.65 | 1 | v Munster Reds | Bready | lost | 25 Jun 2021 | Twenty20 | |
| 131/5 | 18.5 | 6.95 | 2 | v Knights | Dublin | won | 3 Sep 2020 | Twenty20 | |
| 130/9 | 13.0 | 10.00 | 2 | v Knights | Dublin | lost | 24 Jun 2019 | Twenty20 | |
| 127/1 | 12.3 | 10.16 | 2 | v Knights | Bready | won | 1 Jul 2025 | Twenty20 | |
| 127/8 | 20.0 | 6.35 | 1 | v NW Warriors | Bready | won | 27 Jun 2021 | Twenty20 | |
| 124/4 | 12.0 | 10.33 | 1 | v NW Warriors | Dublin | won | 27 Aug 2020 | Twenty20 | |
| 123/4 | 15.3 | 7.93 | 2 | v Munster Reds | Belfast | won | 24 Jun 2025 | Twenty20 | |
| 120/5 | 13.4 | 8.78 | 2 | v Munster Reds | Cork | won | 11 Aug 2017 | Twenty20 | |
| 118 | 19.3 | 6.05 | 1 | v NW Warriors | Dublin | lost | 21 Jul 2017 | Twenty20 | |
| 113/9 | 20.0 | 5.65 | 1 | v NW Warriors | Comber | lost | 19 Sep 2021 | Twenty20 | |
| 99 | 13.4 | 7.24 | 2 | v Warriors | Cork | lost | 7 Jun 2023 | Twenty20 | |
| 99 | 19.1 | 5.16 | 1 | v NW Warriors | Bready | won | 8 Jun 2018 | Twenty20 | |
| 97/4 | 10.2 | 9.38 | 2 | v Knights | Dublin | won | 29 Jul 2022 | Twenty20 | |
| 86/1 | 8.0 | 10.75 | 2 | v Warriors | Dublin | won | 28 Aug 2024 | Twenty20 | |
| 77/1 | 8.0 | 9.62 | 2 | v Munster Reds | Dublin | won | 20 Aug 2020 | Twenty20 | |
| 77/3 | 9.4 | 7.96 | 2 | v Munster Reds | Cork | won | 1 Sep 2020 | Twenty20 | |
| DNB | 0.0 | - | - | v Warriors | Bready | n/r | 21 May 2024 | Twenty20 |
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Records includes the following current or recent matches:
Cyprus vs Croatia at Zagreb, Cyprus in Croatia 1st T20I, Aug 7, 2025 [T20I # 3292]
Norway vs Austria at Stockholm, Viking Cup 1st Match, Aug 7, 2025 [T20I # 3293]
Switzerland vs Estonia at Tallinn, Switzerland in Estonia 2nd T20I, Aug 3, 2025 [T20I # 3389]