6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

For the month of November 2023

Commission File Number 001-40459

ERO COPPER CORP.

(Translation of registrant's name into English)

625 Howe Street, Suite 1050

Vancouver, British Columbia V6C 2T6

Canada

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ¨      Form 40-F x

Exhibit 99.1 of this Form 6-K is incorporated by reference as an additional exhibit to the registrant’s Registration Statement on Form F-10 (File NO. 333-274097)

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibit Index

Exhibit 99.1

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 (File No. 333-274097) of Ero Copper Corp. (the “Company”), and the information that has been reviewed and approved by them in the Company’s Management’s Discussion and Analysis for the three and nine months ended September 30, 2023, dated November 2, 2023, included in the Current Report on Form 6-K of the Company, dated November 2, 2023.

Yours truly,

Dated: November 2, 2023