Company: WEBNF
Filing Date: 2025-05-05
Form Type: 6-K
Source: 0001104659-25-044308
Chunk: 0

Company: WESTPAC BANKING CORP
Filing Date: 2025-05-05
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE
COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN
PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

May 5, 2025

Commission File Number 1-10167

(Translation of
registrant’s name into English)

(Address of principal
executive office)

Indicate by check
mark whether the registrant files or will file annual reports

under cover of Form
20-F or Form 40-F.

Form 20-F x Form
40-F ¨</div>

Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨

Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨

Incorporation by Reference

The information contained
in Exhibit 1 to this Report on Form 6-K shall be incorporated by reference in the prospectuses relating to the Registrant’s securities
contained in the Registrant’s Registration Statements on Form F-3 (File Nos. 333-283007 and 333-283008), as such prospectuses may
be amended or supplemented from time to time.

Index to Exhibits

| Exhibit 
 No.     |     | Description                              |
| 1       |     | Westpac Group March 2025 Pillar 3 Report |

Disclosure regarding forward-looking statements

The information contained in this Report on Form
6-K contains statements that constitute “forward-looking statements” within the meaning of section 21E of the U.S. Securities
Exchange Act of 1934.

Forward-looking statements are statements that
are not historical facts. Forward-looking statements appear in a number of places in this Report and include statements regarding our
current intent, belief or expectations with respect to our business and operations, macro and micro economic and market conditions, results
of operations and financial condition and performance, capital adequacy and liquidity and risk management, including, without limitation,
future loan loss provisions and financial support to certain borrowers, forecasted economic indicators and performance metric outcomes,
indicative drivers, climate- and other sustainability- related statements, commitments, targets, projections and metrics, and other estimated
and proxy data.