BNDX Vanguard Total International Bond

VANGUARD CHARLOTTE FUNDS

(Exact Name of Registrant as Specified in Declaration of Trust)

P.O. Box 2600, Valley Forge, PA 19482

(Address of Principal Executive Office)

Registrant's Telephone Number (610) 669-1000

Anne E. Robinson, Esquire

P.O. Box 876

Valley Forge, PA 19482

It is proposed that this filing will become effective (check appropriate box) [ ] immediately upon filing pursuant to paragraph (b)

[X]on May 13, 2020, pursuant to paragraph (b)

[ ] 60 days after filing pursuant to paragraph (a)(1)

[ ] on (date) pursuant to paragraph (a)(1)

[ ] 75 days after filing pursuant to paragraph (a)(2) [] on (date), pursuant to paragraph (a)(2) of rule 485

If appropriate, check the following box:

[X]This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Explanatory Note

This Post-Effective Amendment No. 28 under the Securities Act of 1933, as amended (the "Securities Act") (Amendment No. 31 under the Investment Company Act of 1940, as amended) to

the registration statement on Form N-1A (the "Registration Statement") of Vanguard Charlotte Funds (the "Trust") is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 under the Securities Act solely for the purpose of delaying, until May 13, 2020, the pending effective date of the Trust's 23rd Post-Effective Amendment. By way of further background:

∙Post-Effective Amendment No. 26 was filed under Rule 485(b)(1)(iii) on March 17, 2020, for the sole purpose of extending to April 15, 2020, the then-pending effective date of Post-Effective Amendment No. 24.

∙Post-Effective Amendment No. 24 was filed under Rule 485(b)(1)(iii) on February 21, 2020, for the sole purpose of extending to March 18, 2020, the then-pending effective date of Post-Effective Amendment No. 23.

∙Post-Effective Amendment No. 23 was filed under Rule 485(a) on December 5, 2019, for the purpose of adding Vanguard Total International Bond II Index Fund, a new series of the Trust, and which will be offered in an Investor Share Class, an Admiral Share Class, and an Institutional Share Class. Post-Effective Amendment No. 23 originally requested that the Amendment become effective February 25, 2020.

This Post-Effective Amendment No. 28 incorporates by reference the information contained in Parts A, B, and C of Post-Effective Amendment No. 23 to the Registrant's Registration Statement.