King Arthur's Great Halls (opened 1933) is a Grade II* listed building in Fore Street, Tintagel, Cornwall, England, UK.

[1] Built in the early 1930s by Frederick Thomas Glasscock (died 1934),[2] it originally served as the headquarters for a social organization known as the Order of the Fellowship of the Knights of the Round Table.

Glasscock founded the Order of the Fellowship of the Knights of the Round Table in 1927 to promote Christian ideals and his interpretation of Arthurian notions of medieval chivalry.

The hall is also used by the Order of the Fellowship of the Knights of the Round Table of King Arthur for their annual dinner, held on the first Saturday in June.

As of 1997 it is considered to be the largest collection of stained glass panels of King Arthur made in the 20th century and a great example of Arts and Crafts workmanship.