Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference of our reports dated February 25, 2010, with respect to the consolidated financial statements, condensed consolidating financial information, and financial statement schedule of ConocoPhillips, and the effectiveness of internal control over financial reporting of ConocoPhillips, included in this Annual Report (Form 10-K) for the year ended December 31, 2009, in the following registration statements and related prospectuses.

ConocoPhillips Form S-3	File No. 333-157547
ConocoPhillips Form S-4	File No. 333-130967
ConocoPhillips Form S-8	File No. 333-98681
ConocoPhillips Form S-8	File No. 333-116216
ConocoPhillips Form S-8	File No. 333-133101
ConocoPhillips Form S-8	File No. 333-159318

/s/ Ernst & Young LLP  

Houston, Texas
February 25, 2010