Ireland's Paul Stiriling and Australia's Andrew Tye hold the records of most runs and wickets in a calendar year in T20Is respectively.
Last year Ireland's star batsman Paul Stirling scored 748 runs at an average of 41.55 in 20 T20 internationals with 8 fifties which is a record for most runs in a calendar year in T20I cricket, and in 2018 Australia's fast bowler Andrew Tye took 31 wickets in 19 matches which is also a record of most wickets in a calendar year in this format. Here is a list of players with most runs and wickets in a calendar year in T20I cricket.
Most Runs in a Calendar Year in T20I cricket -
| Player | Team | Mat | Inns | Runs | Avg | Sr | HS | 100 | 50 | Year |
| Paul Stirling | Ireland | 20 | 20 | 748 | 41.55 | 140.6 | 91 | 0 | 8 | 2019 |
| Kevin O'Brien | Ireland | 23 | 23 | 729 | 31.69 | 155.4 | 124 | 1 | 3 | 2019 |
| Max O'Dowd | Netherlands | 24 | 24 | 702 | 29.25 | 120.8 | 69 | 0 | 6 | 2019 |
| Shikhar Dhawan | India | 18 | 17 | 689 | 40.52 | 147.2 | 92 | 0 | 6 | 2018 |
| Virat Kohli | India | 15 | 13 | 641 | 106.8 | 140.3 | 90* | 0 | 7 | 2016 |
| Ben Cooper | Netherlands | 21 | 21 | 637 | 37.47 | 127.9 | 91* | 0 | 5 | 2019 |
| Andrew Balbirnie | Ireland | 21 | 20 | 601 | 33.38 | 143.8 | 83 | 0 | 3 | 2019 |
| Rohit Sharma | India | 19 | 18 | 590 | 36.87 | 147.5 | 111* | 2 | 3 | 2018 |
| Fakhar Zaman | Pakistan | 17 | 17 | 576 | 33.88 | 148.8 | 91 | 0 | 4 | 2018 |
| Tony Ura | PNG | 17 | 17 | 572 | 47.66 | 147.1 | 107* | 1 | 4 | 2019 |
Most Wickets in a Calendar Year in T20I cricket -
| Player | Team | Mat | Wickets | Avg | Eco | BBI | 4w | 5w | Year |
| Andrew Tye | Australia | 19 | 31 | 18.93 | 8.56 | 4/23 | 1 | 0 | 2018 |
| S Lamichhane | Nepal | 16 | 28 | 13.71 | 6.50 | 4/20 | 1 | 0 | 2019 |
| Brandon Glover | Netherlands | 19 | 28 | 16.00 | 6.89 | 4/12 | 2 | 0 | 2019 |
| Karan KC | Nepal | 19 | 28 | 17.00 | 7.23 | 4/17 | 2 | 0 | 2019 |
| Shadab Khan | Pakistan | 19 | 28 | 17.42 | 6.62 | 3/19 | 0 | 0 | 2018 |
| Jasprit Bumrah | India | 21 | 28 | 18.82 | 6.62 | 3/11 | 0 | 0 | 2016 |
| Dirk Nannes | Australia | 14 | 27 | 14.92 | 7.60 | 4/18 | 1 | 0 | 2010 |
| Mark Adair | Ireland | 17 | 27 | 15.29 | 6.57 | 4/40 | 1 | 0 | 2019 |
| P van Meekeren | Netherlands | 18 | 27 | 18.33 | 7.26 | 4/38 | 1 | 0 | 2019 |
| Iqbal Hussain | Qatar | 15 | 26 | 16.38 | 8.16 | 4/33 | 1 | 0 | 2019 |