Exhibit 31.1
CERTIFICATION
I, Merrill A. Miller, Jr., certify that:
(1) | I have reviewed this annual report on Form 10-K/A of National Oilwell Varco, Inc. for the fiscal year ended December 31, 2007; and |
(2) | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: March 13, 2008
By: | /s/ Merrill A. Miller, Jr. | |||||
Merrill A. Miller, Jr. Chairman, President and Chief Executive Officer |