EXHIBIT 15

May 6, 2016

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Commissioners:

We are aware that our report dated May 6, 2016 on our review of interim financial information of Sonoco Products Company for the three-month periods ended April 3, 2016 and March 29, 2015 and included in the Company’s quarterly report on Form 10-Q for the quarter ended April 3, 2016 is incorporated by reference in its Registration Statements on Forms S-8 (File No. 333-206669; File No. 333-206671; File No. 333-206672; File No. 333-206673; File No. 333-206674; and File No. 333-206675).

Very truly yours,

/s/ PricewaterhouseCoopers LLP