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Exhibit 31.2
 Certification of CFO 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 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 controls 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 Financial Officer