Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in this Registration Statement on Form S-1 filed pursuant to Rule 462(b) of the Securities Act of 1933, of the reference to our firm under the captions “Summary Financial Data”, “Selected Financial Data” and “Experts” and of our report dated February 17, 2011 (except Note 18, as to which the date is March 9, 2011), with respect to the consolidated financial statements of HCA Holdings, Inc., and our report dated February 17, 2011, with respect to the effectiveness of internal control over financial reporting of HCA Holdings, Inc. included in the Registration Statement (Form S-1 No. 333-171369) and related Prospectus of HCA Holdings, Inc. for the registration of shares of its common stock.

/s/ Ernst & Young LLP

Nashville, Tennessee
March 9, 2011