The Shire of Glenelg is a local government area in the Barwon South West region of Victoria, Australia, located in the south-western part of the state. It covers an area of 6,219 square kilometres (2,401 sq mi) and in June 2018 had a population of 19,665. It includes the towns of Casterton, Heywood, Merino and Portland. Although a shire of the same name existed before the amalgamations of the mid-1990s, the current Shire was formed in 1994 from the amalgamation of the former Shire of Glenelg with the Shire of Heywood and City of Portland.

The Shire is governed and administered by the Glenelg Shire Council; its seat of local government and administrative centre is located at the council headquarters in Portland, it also has service centres located in Casterton and Heywood. The Shire is named after the Glenelg River, a major geographical feature that meanders through the Shire.

At the 2001 Census, the population of the Shire was distributed in the following way: Portland: 49.7%, Casterton: 8.7%, Heywood: 6.3%, Dartmoor: 1.3%, Merino: 1.1%, Narrawong: 0.9% and Rural Balance: 32%.

Service industries, timber production, grazing and manufacturing are the Shire's main economic activities.

The formally recognised traditional owners for the area in which Glenelg Shire sits are the Gunditjmara People who are represented by the Gunditj Mirring Traditional Owners Aboriginal Corporation.

The council is composed of seven councillors elected to represent an unsubdivided municipality. The current councillors, in order of election at the 2020 election, are:

Ward	Party		Councilor	Notes
Unsubdivided		Labor	Gilbert Wilson
		Nationals	Anita Rank
		Independent	Karen Stephens
		Independent	Martin Scott
		Independent	Michael Carr
		Independent	Chrissy Hawker
		Independent	Jayden Smith

The council meets in the council chambers at the council headquarters in the Portland Municipal Offices, which is also the location of the council's administrative activities. It also provides customer services at both its administrative centre in Portland, and its service centres in Casterton and Heywood.

The 2021 census, the shire had a population of 20,152 up from 19,557 in the 2016 census

^ - Territory divided with another LGA

• List of localities (Victoria)

• Glenelg Shire Council official website
• Metlink local public transport map
• Link to Land Victoria interactive maps

38°00′00″S 141°40′00″E / 38.00000°S 141.66667°E / -38.00000; 141.66667