- Elliot Smethwyck — inventor of the Cushioning Charm
- Hippocrates Smethwyck — a healer at St Mungo's Hospital for Magical Maladies and Injuries
- Leopoldina Smethwyck — a pioneering Quidditch referee
Smethwick is a town in the West Midlands, England. Its name may mean "village of smiths," from the plural form of Old English smiþ, "smith," and wic, "village." Another theory is that the town's name derives from Old English smethe, "smooth," and wic, "village," thus meaning "village on a plain."