This is a list of the extreme points of the British Isles, the points that are farther north, south, east, west, higher or lower than any other location.

• Northernmost Point — Out Stack, Shetland Islands, Scotland
• Northernmost Settlement — Skaw, Unst, Shetland Islands, Scotland
• Southernmost Point — Les Minquiers Reef, Jersey, Channel Islands
• Southernmost Settlement — Saint Clement, Jersey, Channel Islands
• Westernmost Point — Rockall, Harris, Scotland
• Westernmost Settlement — Dunquin, County Kerry, Ireland
• Easternmost Point — Lowestoft Ness, Suffolk, England
• Easternmost Settlement — Lowestoft, Suffolk, England
• Most Inland Point — Church Flatts Farm, Derbyshire, England
• Most Inland Settlement — Coton in the Elms, Derbyshire, England, at 70 miles (113 km) from the nearest coast.
• Highest Point — Ben Nevis, Highland, Scotland at 1,345 m (4,413 ft) above sea level.
• Highest Settlement — Flash, Staffordshire, England at 463 m (1,519 ft) above sea level.
• Lowest Point — North Slob, County Wexford, Ireland at 3 m (10 ft) below sea level.