March 27, 2026 

U.S. Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549 

Re: Vanguard Wellesley Income Fund (the “Trust”)
File No. 2-31333 

Commissioners: 

Pursuant to Rule 497(j) under the Securities Act of 1933, this letter serves as certification that the Prospectuses and Statement of Additional Information with respect to the above-referenced Trust do not differ from that filed in the most recent post-effective amendment, which was filed electronically.  

Sincerely, 

/s/Anthony Coletta 

Anthony Coletta 

Senior Counsel 

The Vanguard Group, Inc. 

Enclosures 

cc: Lisa N. Larkin 

U.S. Securities and Exchange Commission