Exhibit 99.3

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in Registration Statements Nos., 333-159047, 333-148048 and 333-145300 on Form S-8 and Registration Statement No. 333-217016 on Form F-3D of our report dated February 15, 2018 relating to the consolidated financial statements of Yamana Gold Inc. and subsidiaries (“Yamana”) and our report dated February 15, 2018 relating to the effectiveness of Yamana’s internal control over financial reporting appearing in this Current Report on Form 6-K dated February 15, 2018.

/s/ Deloitte LLP

Chartered Professional Accountants

Licensed Public Accountants

Toronto, Canada

February 15, 2018