Wells () is a cathedral city and civil parish in Somerset, located on the southern edge of the Mendip Hills, 21 miles (34 km) south-east of Weston-super-Mare, 22 mi (35 km) south-west of Bath and 23 mi (37 km) south of Bristol. Although the population recorded in the 2011 census was only 10,536, (increased to 12,000 by 2018) and with a built-up area of just 3.244 km² (1.253 sq mi), Wells has had city status since medieval times, because of the presence of Wells Cathedral. Often described as England's smallest city, it is actually second smallest to the City of London in area and population, but unlike London it is not part of a larger urban agglomeration.

Wells takes its name from three wells dedicated to Saint Andrew, one in the market place and two within the grounds of the Bishop's Palace and cathedral. A small Roman settlement surrounded them, which grew in importance and size under the Anglo-Saxons when King Ine of Wessex founded a minster church there in 704. The community became a trading centre based on cloth making and Wells is notable for its 17th-century involvement in both the English Civil War and the Monmouth Rebellion. In the 19th century, transport infrastructure improved with stations on three different railway lines. However, since 1964 the city has been without a railway link.

The cathedral and the associated religious and medieval architectural history provide much of the employment. The city has a variety of sporting and cultural activities and houses several schools including The Blue School, a state coeducational comprehensive school that was founded in 1641, and the private Wells Cathedral School, which was founded possibly as early as 909 and is one of the five established musical schools for school-age children in the United Kingdom. Wells's historic architecture has led to the city being used as a shooting location for numerous films and television programmes.