Alastair Thomas
| Year of Birth: | 2000 |
| Home Country: | Scotland |
| Place of Residence: | Oslo |
| Club (National): | West Cumberland Orienteering Club (WCOC) |
| Club (International): | Nydalen Skiklubb |
| Occupation: | Data Engineer |
| Coach: | Hans Petter Mathisen |
| World Champs Debut: | WOC 2021/ JWOC 2018 |