Hugh Town (Cornish: Treworenys[1] or Tre Huw) is the largest settlement on the Isles of Scilly and its administrative centre.

Unlike the rest of the Isles of Scilly, the freehold title to land in the town is not held by the Duchy of Cornwall — in 1949 it was sold to the inhabitants.

It was originally the home of Captain Frank Tregarthen who introduced the first sloop in 1849, 'Ariadne', that serviced the Hugh Town from Penzance.

On the eastern outskirts of the town (heading towards Peninnis Head) are the NHS community hospital and local health centre, as well as other important public amenities such as the island's power station, the island's refuse depot and the town's fire station.

[9] The Isles of Scilly Museum was housed in a purpose-built building which was declared unsafe in 2019, and is now partly accommodated in the Town Hall.

There is a plan to convert the Town Hall building to form the Isles of Scilly Cultural Centre and Museum, to open in 2025/26.

As with most of the British Isles, Hugh Town experiences a maritime climate (Cfb) with mild summers and cool winters, however temperatures rarely dip below freezing.

The principal harbour of the Isles of Scilly (known as St Mary's Harbour) is located on the northern edge of the town, naturally formed by the bay at Town Beach (itself part of a larger bay named St Mary's Pool) and improved by the construction of a quay on its western side, which acts also as a breakwater.

[4] The original quay was built in 1593 and an extension (or offshoot) began in 1836 to Rat Island under a contract of £4,000 to William Martin of Penzance.

[22][23] On the eastern end of Town Beach (on the rocky outcrop known as Carn Thomas) is the St Mary's Lifeboat Station, first operated in 1837 and run by the RNLI.