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Exhibit 31.1
 Certification of CEO Pursuant to
18 U.S.C. Section 1350,
As Adopted Pursuant to
Section 302 of the Sarbanes-Oxley Act of 2002
 I, Gregory Mays, certify that:1.
    
    I have reviewed this report on Form 10-Q for the period ended June 30,
2007, of Wild Oats Markets, Inc.;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;3.
    
    Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows
of the registrant as of, and for, the periods presented in this
report;4.
    
    The registrants other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal
control over financial reporting (as defined in Exchange Act Rules
13a-15(f) and 15a-15(f)) for the registrant and have:
 a)
    
    Designed such disclosure controls and procedures,
or caused such disclosure controls and procedures
to be designed under our supervision, to ensure
that material information relating to the
registrant, including its consolidated
subsidiaries, is made known to us by others
within those entities, particularly during the
period in which this report is being prepared;
andb)
    
    Designed such internal control over financial
reporting, or caused such internal control over
financial reporting to be designed under our
supervision, to provide reasonable assurance
regarding the reliability of financial reporting
and preparation of financial statements for
external purposes in accordance with generally
accepted accounting principles;c)
    
    Evaluated the effectiveness of the registrants
disclosure controls and procedures and presented
in this report our conclusions about the
effectiveness of the disclosure controls and
procedures, as of the end of the period covered
by this report based on such evaluation; andd)
    
    Disclosed in this report any changes in the
registrants internal control over financial
reporting that occurred during the registrants
most recent fiscal quarter that has materially
affected, or is reasonably likely to materially
affect, the registrants internal control over
financial reporting; and
 5.
    
    The registrants other certifying officer and I have disclosed, based
on our most recent evaluation, of internal control over financial
reporting, to the registrants auditors and the audit committee of the
registrants board of directors (or persons performing the equivalent
functions):
 a)
    
    All significant deficiencies and material
weaknesses in the design or operation of internal
control over financial reporting which are
reasonably likely to adversely affect the
registrants ability to record, process,
summarize and report financial information; andb)
    
    Any fraud, whether or not material, that involves
management or other employees who have a
significant role in the registrants internal
control over financial reporting.
 Date: August 9, 2007/s/ Gregory MaysGregory MaysInterim Chief Executive Officer