North Mymms is a civil parish in the county of Hertfordshire. The parish includes:
- Bell Bar
- Brookmans Park. The park includes the former park of Gobions (demolished), once the property of Sir Thomas More. A castellated gateway to the park is now called “The Folly”. In 1956 North Mymms Parish Council acquired the land and the lake now known as Gobions Open Space.
- Little Heath
- Bullens Green
- Water End
- Welham Green
The parish church of St Mary’s stands in the park of North Mymms; in it is a chapel, the burial place of the Coningsbys. There is a monument to Robert Knolles of North Mymms Place, dated 1458. There is also a large monument to Lord Somers, Baron Evesham and lord chancellor in the time of William III, d. 1716.
North Mymms is also home to the Hawkshead Campus of the Royal Veterinary College, part of the University of London.