| Kumar, A | 0 | U | 127735 | Barnet Knights |
| Kumar, A | 0 | U | 175774 | Club Unknown |
| Kumar, Aadhidhyan | 0 | U | 262615 | Cornwall Juniors |
| Kumar, Aadya | 1024 | M | 346264 | Colchester Junior |
| Kumar, Aarav | 0 | M | 322706 | Richmond Juniors |
| Kumar, Aarini | 0 | F | 348953 | Buckinghamshire* |
| Kumar, Aarya | 0 | F | 348598 | Wallace Chess |
| Kumar, Abhijit V | 0 | M | 321128 | Maidenhead |
| Kumar, Abhishek | 0 | U | 231667 | Wiltshire Juniors |
| Kumar, Abkinar | 0 | M | 273813 | Bolton School |
| Kumar, Achintya | 1060 | M | 341669 | Harrow |
| Kumar, Achintya | 0 | M | 367087 | University of Reading |
| Kumar, Adhil | 0 | M | 312283 | Hertfordshire * |
| Kumar, Aishwaraya | 0 | F | 328676 | Camden * |
| Kumar, Aishwarya | 0 | M | 328140 | Barnet Juniors |
| Kumar, Ajay | 0 | M | 307552 | Cheshire & N Wales Juniors |
| Kumar, Akruth | 0 | M | 322669 | Middlesex Juniors |
| Kumar, Akshay | 0 | M | 341894 | India |
| Kumar, Aman | 1360 | M | 321961 | Oxford City |
| Kumar, Amit | 0 | M | 348325 | London NW * |
| Kumar, Anirudh | 0 | U | 241502 | Coventry * |
| Kumar, Anjali | 0 | F | 305374 | Kent Junior Congresses |
| Kumar, Anup | 0 | U | 274139 | Sheffield Nomads |
| Kumar, Aordish | 0 | M | 323239 | Campion School (Warwickshire) |
| Kumar, Arjan | 0 | M | 356293 | Blue Coat Harborne |
| Kumar, Arjun | 0 | M | 301889 | 3Cs |
| Kumar, Arjun | 0 | M | 328456 | Cheshire & N Wales Juniors |
| Kumar, Arnav | 1327 | M | 309042 | Epsom |
| Kumar, Arnav | 0 | M | 343839 | Coulsdon Chess Club |
| Kumar, Arulvel | 0 | U | 277080 | Preston |
| Kumar, Arvind | 0 | M | 324939 | Cleveland * |
| Kumar, Arya | 0 | M | 352218 | Maidenhead Junior |
| Kumar, Aryan | 0 | M | 364957 | Wiltshire * |
| Kumar, Aryan | 0 | M | 360215 | Reading * |
| Kumar, Aryan | 0 | M | 293159 | Surrey Juniors |
| Kumar, Ashish | 0 | U | 289094 | Pembroke College CU |
| Kumar, Ashvin | 1420 | M | 309161 | Hoylake |
| Kumar, Ashwath Ram Ashok | 0 | M | 357700 | Manchester * |
| Kumar, Ashwin | 0 | M | 362823 | Staffordshire * |
| Kumar, Ashwin | 0 | M | 256980 | Coulsdon Chess Club |
| Kumar, Athish | 0 | M | 303566 | Cheshire & N Wales * |
| Kumar, Avani | 0 | F | 355534 | Nottinghamshire* |
| Kumar, Avi | 0 | M | 340575 | Bromley/Beckenham * |
| Kumar, Avi | 0 | M | 347867 | Hertfordshire * |
