EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use of our report dated March 25, 2015 relating to the consolidated financial statements of MAG Silver Corp. (“MAG Silver”) appearing in this Annual Report on Form 40-F of MAG Silver for the year ended December 31, 2014.

/s/ “Deloitte LLP”                                                                

Chartered Accountants

Vancouver, BC, Canada

March 25, 2015