As filed with the Securities and Exchange Commission on July 28, 2023

Securities Act File No. 333-92106

Investment Company Act of 1940 File No. 811-21145

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT

UNDER

And

REGISTRATION STATEMENT

UNDER

SPDR^® INDEX SHARES FUNDS

(Exact Name of Registrant as Specified in Charter)

One Iron Street

Boston, Massachusetts 02210

(Address of Principal Executive Offices)

Registrant’s Telephone Number: (617) 664-1465

Sean O’Malley, Esq.

Senior Vice President and General Counsel

c/o SSGA Funds Management, Inc.

One Iron Street

Boston, Massachusetts 02210

(Name and Address of Agent for Service)

Copies to:

W. John McGuire, Esq.

Morgan, Lewis & Bockius LLP

1111 Pennsylvania Avenue, NW

Washington, DC 20004

It is proposed that this filing will become effective:

NOTE: This Post-Effective Amendment No. 175 to the Registrant’s Registration Statement on Form N-1A is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 under the Securities Act of 1933, as amended (the “Securities Act”), solely for the purpose of delaying, until August 27, 2023, the effectiveness of Post-Effective Amendment No. 154 to the Registrant’s Registration Statement on Form N-1A related to SPDR MSCI EAFE Climate Paris Aligned ETF and SPDR MSCI Emerging Markets Climate Paris Aligned ETF, which were filed pursuant to Rule 485(a) under the Securities Act on May 19, 2022 (the “Amendment”).

Part A. INFORMATION REQUIRED IN A PROSPECTUS

Part A is incorporated by reference to Part A of the Amendment.

Part B. INFORMATION REQUIRED IN A STATEMENT OF ADDITIONAL INFORMATION

Part B is incorporated by reference to Part B of the Amendment.

Part C. OTHER INFORMATION

Part C is incorporated by reference to Part C of Post-Effective Amendment No. 173, which was filed on June 2, 2023.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, SPDR^® Index Shares Funds, the Registrant, certifies that it meets all the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b)(1)(iii) under the Securities Act of 1933, as amended, and has duly caused this Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereunder duly authorized, in the City of Boston and the Commonwealth of Massachusetts on the 28^th day of July, 2023.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, this Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated: