Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on FormS-8 related to the Sanofi Action 2018 Shareholding Plan, of our reports dated March 6, 2018 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appear in Sanofi’s Annual Report on Form20-F for the year ended December 31, 2017.
Neuilly-sur-Seine, France
June 7, 2018
/s/ PricewaterhouseCoopers Audit
/s/ Philippe Vogt | ||||||