| Izhar Hussain | Pakistan | right-hand-bat | right-arm-fast-medium | T10, T20I |
| Izharulhaq Naveed | Afghanistan | right-hand-bat | legbreak | T10, T20, Youth ODI |
| Izharullah Kokihil | Afghanistan | left-hand-bat | left-arm-fast-medium | T10 |
| Izzy Patel | England | right-hand-bat | right-arm-fast-medium | ODI |
| Izzy Sharp | New Zealand | - | - | ODI, T20, T20I |
| J Durga Kumar | India | - | - | - |
| J Gowri Sankar | India | left-hand-bat | slow-left-arm-orthodox | T20 |
| J Jeevanantham | India | right-hand-bat | - | - |
| J Karthikeyan | India | - | - | T20 |
| J Suresh Kumar | India | right-hand-bat | - | T20 |
| J VIinod Naidu | India | - | - | T20 |
| J Visser | Netherlands | right-hand-bat | - | - |
| Jaahid Ali | Pakistan | right-hand-bat | right-arm-offbreak | - |
| Jaashwin Krishnamurthi | Malaysia | - | - | Youth ODI |
| Jabar Jabarkhil | Belgium | right-hand-bat | right-arm-fast-medium | T10 |
| Jabed Kaisar | Finland | - | - | T20 |
| Jabir Syed | Belgium | - | - | T10 |
| Jabran Gulzar | Pakistan | - | - | T10 |
| Jabran Khan | Denmark | - | - | T10, T20I |
| Jabrar Afzal | Italy | right-hand-bat | right-arm-fast-medium | T10 |
| Jacinta Savage | New Zealand | - | - | T20 |
| Jack Barritt | Malta | right-hand-bat | - | T10 |
| Jack Beattie | Ireland Republic | - | - | T10 |
| Jack Berrisford | England | left-hand-bat | - | - |
| Jack Blatherwick | England | right-hand-bat | right-arm-fast-medium | 4day, List A, T20, Test/5day |
| Jack Boyle | New Zealand | right-hand-bat | right-arm-offbreak | 4day, List A, ODI, T10, T20 |
| Jack Brassell | Namibia | right-hand-bat | right-arm-fast-medium | T20I, Youth ODI |
| Jack Brooks | England | right-hand-bat | right-arm-fast-medium | 4day, List A, T20, Test/5day |
| Jack Brown | Guernsey | - | - | T10 |
| Jack Brussell | Namibia | - | - | ODI, T20I |
| Jack Burnham | England | right-hand-bat | right-arm-fast-medium | 4day, ODI, T20 |
| Jack Campbell | England | right-hand-bat | left-arm-fast-medium | List A, T20 |
| Jack Carney | England | right-hand-bat | - | Youth ODI |
| Jack Carson | England | - | - | 4day, List A, T20 |
| Jack Clayton | Australia | right-hand-bat | - | 4day, List A, T20 |
| Jack Crowther | England | right-hand-bat | left-arm-fast-medium | T10 |
| Jack Cunningham | Portugal | - | - | T10 |
| Jack Davies | England | left-hand-bat | - | 4day, List A, T20 |
| Jack De Gruchy | Jersey | right-hand-bat | right-arm-fast-medium | T10 |
| Jack Dickson | Ireland Republic | right-hand-bat | - | Youth ODI |
| Jack Edwards | Australia | right-hand-bat | right-arm-fast-medium | 4day, List A, ODI, T20, T20I, Test/5day |
| Jack Flynn | Australia | right-hand-bat | right-arm-fast-medium | ODI, T20 |
| Jack Gardner | Papua New Guinea | right-hand-bat | - | ODI, T20I |
| Jack Giacomo | Australia | - | - | T20 |
| Jack Hall | England | right-hand-bat | left-arm-fast | T10 |
| Jack Harding | England | - | - | List A |
| Jack Haynes | England | right-hand-bat | right-arm-offbreak | , 100-Ball, 4day, List A, ODI, T20, Youth ODI |
| Jack Hogarth | Scotland | - | - | T10 |
| Jack Home | England | right-hand-bat | - | 4day, List A, T20, Youth ODI |
| Jack Hope-Bell | Wales | right-hand-bat | right-arm-offbreak | - |