| Clubname: | St Day |
| Fullname: | St Day A.F.C. |
| Ground: | Vogue Park, St Day |
| Chairman: | Danny Watts |
| Manager: | Joff Mallaber |
St Day Association Football Club is a football club based in St Day, Cornwall. They are currently members of the and play at Vogue Park, St Day.
St Day A.F.C. was formed in 1949,[1] although there had previously been at least one other club in the village. They joined the Cornwall Combination in 2006, after a long period in the Falmouth and Helston League, and were runners-up in 20212–13.[2] After a third-place finish in 2018–19, they were promoted to the new St Piran League West Division, and finished third two years running in 2021–22 and 2022–23. St Day won the Premier Division (West) title in 2023–24, remaining unbeaten all season,[3] and were subsequently promoted to the South West Peninsula League Premier Division West.