FH Allen of New Zealand shares the record for most boundary sixes in a T20I innings
FH Allen of New Zealand scored 16 boundary sixes in his innings of 137 against Pakistan at Dunedin in the just concluded third T20I to share the record of most boundary sixes in an innings in a T20 I with Hazaratulla Zazai of Afghanistan. Zazai had scored 16 boundary sixes in his knock of 162 not out against Ireland at Dehradunon 23.02.2019. The following table lists the batsmen who have scored ten or more boundary sixes in a T20I
| No | Player | Runs | 6s | I | Team | Opp | Ground | Start Date |
| 1 | Hazratullah Zazai | 162* | 16 | 1 | Afg | Ire | Dehradun | 23 Feb 2019 |
| 2 | FH Allen | 137 | 16 | 1 | NZl | Pak | Dunedin | 17 Jan 2024 |
| 3 | Zeeshan Kukikhel | 137 | 15 | 2 | Hun | Aust | Lower Austria | 05 Jun 2022 |
| 4 | AJ Finch | 156 | 14 | 1 | Aus | Eng | Southampton | 29 Aug 2013 |
| 5 | HG Munsey | 127* | 14 | 1 | Sco | Net | Dublin (M) | 16 Sep 2019 |
| 6 | RE Levi | 117* | 13 | 2 | RSA | NZl | Hamilton | 19 Feb 2012 |
| 7 | E Lewis | 125* | 12 | 2 | Win | Ind | Kingston | 09 Jul 2017 |
| 8 | Kushal Malla | 137* | 12 | 1 | Nep | Mon | Hangzhou | 27 Sep 2023 |
| 9 | CH Gayle | 100* | 11 | 2 | Win | Eng | Wankhede | 16 Mar 2016 |
| 10 | LA Dunbar | 117 | 11 | 1 | SRB | Bul | Sofia | 26 Jun 2022 |
| 11 | J Charles | 118 | 11 | 1 | Win | RSA | Centurion | 26 Mar 2023 |
| 12 | A Johnson | 121* | 11 | 1 | Can | Pan | Hamilton | 03 Oct 2023 |
| 13 | CH Gayle | 117 | 10 | 1 | Win | RSA | Johannesburg | 11 Sep 2007 |
| 14 | CJ Anderson | 094* | 10 | 1 | NZl | Ban | Mt Maunganui | 08 Jan 2017 |
| 15 | RG Sharma | 118 | 10 | 1 | Ind | Srl | Indore | 22 Dec 2017 |
| 16 | C Munro | 104 | 10 | 1 | NZl | Win | M Maunganui | 03 Jan 2018 |
| 17 | AJ Finch | 172 | 10 | 1 | Aus | Zim | Harare | 03 Jul 2018 |
FH Allen became the third New Zealand batsman to score ten or more boundary sixes in a Twenty20 International
| No | Player | Runs | 6s | I | Team | Opp | Ground | Start Date |
| 1 | FH Allen | 137 | 16 | 1 | NZl | Pak | Dunedin | 17 Jan 2024 |
| 2 | CJ Anderson | 094* | 10 | 1 | NZl | Ban | Mt Maunganui | 08 Jan 2017 |
| 3 | C Munro | 104 | 10 | 1 | NZl | Win | M Maunganui | 03 Jan 2018 |
AJ Finch of Australia and CH Gayle of West Indies are the two batsmen to score ten or more boundary sixes in a T20I innings on two occasions
| No | Player | Runs | 6s | I | Team | Opp | Ground | Start Date |
| 1 | AJ Finch | 156 | 14 | 1 | Aus | Eng | Southampton | 29 Aug 2013 |
| 2 | AJ Finch | 172 | 10 | 1 | Aus | Zim | Harare | 03 Jul 2018 |
| 1 | CH Gayle | 100* | 11 | 2 | Win | Eng | Wankhede | 16 Mar 2016 |
| 2 | CH Gayle | 117 | 10 | 1 | Win | RSA | Johannesburg | 11 Sep 2007 |