- studA male animal, especially a stud horse (stallion), kept for breeding.
- StudleyA large village and civil parish in Stratford-on-Avon district, Warwickshire, England (OS grid ref SP0763).
- StaddonA surname from Old English.
- StotfoldA village and civil parish in Central Bedfordshire district, Bedfordshire, England (OS grid ref TL2136).
- StudholmeA hamlet in Kirkbampton parish, Cumberland district, Cumbria, England, previously in Allerdale borough (OS grid ref NY2556).