LOOMIS SAYLES FUNDS II 

October 2, 2020 

U.S. Securities and Exchange Commission 

100 F Street, NE 

Washington, DC 20549 

Re:Loomis Sayles Funds II 

(File Nos.: 33-39133 and 811-06241) 

Dear Sir or Madam: 

Pursuant to Rule 497(j) of the Securities Act of 1933, as amended, I hereby certify that the Prospectus and Statement of Additional Information, each dated September 29, 2020, for the Loomis Sayles Credit Income Fund, a series of Loomis Sayles Funds II, do not differ from those contained in Post-Effective Amendment No. 98 that was filed electronically on September 29, 2020. 

Please direct any questions or comments on the enclosed materials to me at (617) 449-2818. 

Very truly yours, 

/s/ John DelPrete 

John DelPrete 

Assistant Secretary