Exhibit 5.15

CONSENT OF CID GONÇALVES MONTEIRO FILHO

The undersigned hereby consents to the reference to his name, where used or incorporated by reference in the Registration Statement on Form F-10 of Ero Copper Corp., including in the Annual Information Form filed as an exhibit thereto, being filed with the United States Securities and Exchange Commission, and any amendments thereto.

Yours truly, 

Dated: August 29, 2025