Twitcher Glacier () is a glacier, 4 miles (6 km) long, which flows east from the Salvesen Range to the east coast of South Georgia, immediately south of Herz Glacier and Iris Bay. The glacier was surveyed in 1951-52 by the SGS. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for John Montagu, fourth Earl of Sandwich, First Lord of the Admiralty, 1771–82, who was popularly known as "Jemmy Twitcher."
This article incorporates public domain material from the United States Geological Survey document "Twitcher Glacier" (content from the Geographic Names Information System).