Exhibit 99.1

News Release

May 4, 2021

Turquoise Hill to announce first quarter financial results on May 12, 2021

Turquoise Hill Resources will announce its first quarter financial results on Wednesday, May 12, 2021 after markets close in North America.

The Company will host a conference call and webcast to discuss first quarter financial results on Thursday, May 13, 2021 at 8:00 am EST / 5:00 am PDT. The conference call can be accessed through the following dial-in details:

North America: +1 888 390 0546

United Kingdom: + 0 800 652 2435

Australia: +1 800 076 068

The conference call will also be simultaneously webcast on Turquoise Hill’s website at www.turquoisehill.com. An archived playback of the call will be available on the Company’s website.

Contact

Investors and Media

Roy McDowall

roy.mcdowall@turquoisehill.com

Follow us on Twitter @TurquoiseHillRe

Turquoise Hill Resources Ltd. Truquoisehill.com Suite 3680 1 Place Ville-Marie Montreal, Québec, Canada H3B 3P2 Telephone + 1 514 848 1567 Toll Free + 1 877 589 4455 info@turquoisehill.com