Charles John Rennie
| Year of Birth: | 2003 |
| Home Country: | UK |
| Place of Residence: | Edinburgh |
| Club (National): | West Cumberland Orienteering Club (WCOC)/Edinburgh University Orienteering Club (EUOC) |
| Club (International): | IFK Lidingo |
| Occupation: | Student |
| Coach: | Mark Nixon |
| World Champs Debut: | JWOC 2023 - Romania, WC1 2025 - Idre Fjall |