Exhibit 99.1

May 5, 2015

Press release

Turquoise Hill to announce first quarter financial results on May 11, 2015

VANCOUVER, CANADA – Turquoise Hill Resources will announce its first quarter financial results on Monday, May 11, 2015 after markets close in North America.

The Company will host a conference call and webcast to discuss first quarter results on Tuesday, May 12, 2015 at 11:00 am EDST/8:00 am PDST. The conference call can be accessed through the following dial-in details:

North America: 416 340 8530 | 800 769 8320

International: +1 416 340 8530

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.

About Turquoise Hill Resources

Turquoise Hill Resources (NYSE, NASDAQ and TSX: TRQ) is an international mining company focused on copper- gold and coal mines in Mongolia. The Company’s primary operation is its 66% interest in the Oyu Tolgoi copper-gold-silver mine in southern Mongolia. Turquoise Hill also holds a 23.3% interest in Mongolian coal miner SouthGobi Resources (TSX: SGQ; HK: 1878).

Contacts
Investors	Media
Jessica Largent Office: +1 604 648 3957 Email:  jessica.largent@turquoisehill.com	Tony Shaffer Office: +1 604 648 3934 Email:  tony.shaffer@turquoisehill.com

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Turquoise Hill Resources Ltd. Suite 354 – 200 Granville Street Vancouver, British Columbia Canada V6C 1S4 T 604 688 5755   www.turquoisehill.com