Westpac has branches and representative offices in Asia, New Zealand, Europe, North America and the Pacific region comprising Fiji, Papua New Guinea and Vanuatu. In 2015, Westpac sold its banking operations in Samoa, Cook Islands and Tonga to the Bank of South Pacific (BSP).

China Beijing Office
Room 9-11, 14/F West Tower, World Financial Centre
No. 1 East 3rd, Ring Middle Road, Chaoyang District
Beijing 100020
Phone: +86 10 8587 7367
Representative Office was opened in 1982. It is a liaison and marketing office, providing information on Westpac and limited advice, directing enquiries to Shanghai, Singapore and Australian offices for transactions.

Shanghai branch
7/F Jin Mao Tower
88 Shi Ji Avenue - Pudong
Shanghai 200121 - PR China
Shanghai Branch was opened in 2008.

Hong Kong branch
Level 16 York House
The Landmark
15 Queen's Road Central
Phone: +852 2842 9888
Hong Kong Office was established in 1971. It offers Private Banking, Migrant Banking, Business Banking and Trade.
Indonesia Jakarta Representative Office
Level 29
Menara Standard Chartered
JL Prof. Dr. Satrio, No. 164
Jakarta 12930, Indonesia
Jakarta office was opened in 1972.
India Mumbai
Unit 61, Level 6
Maker Chambers VI
Nariman Point, Mumbai 400021
Represented since 2007
New Zealand Westpac New Zealand head office
188 Quay Street
Auckland, New Zealand
Phone: +64 9 367 3727
Westpac has been operating in New Zealand since 1861 and is New Zealand's largest full service bank. With 1.3 million customers, more than one in three New Zealanders has a banking relationship with Westpac.
Singapore Singapore Branch
77 Robinson Road
Robinson 77, #19-00
Singapore 068896
Phone: +65 6530 9536
Singapore Branch is regional head office, established in 1979.
United Kingdom Westpac London Office
Ground Floor
23 Camomile Street
London EC3A 7LL
Phone: +44 (0) 20 7621 7222

Westpac Institutional Bank London
Camomile Court
23 Camomile Street
London EC3A 7LL, UK
BSB: 037-902
Representative office in London was opened in February 1853, and is the oldest surviving foreign bank in the UK. Westpac Institutional Bank is represented across Europe and the Americas by over 60 people in London and over 30 people in New York.
USA New York branch
575 Fifth Avenue, 39th Floor
New York, NY 10017-2422, USA
Phone: +1 212 551 1800
Represented since 1970
Westpac operates in the United States as a federally chartered branch, regulated by the Office of the Comptroller of the Currency.