Exhibit 31.2 CERTIFICATION OF
CHIEF FINANCIAL OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002 I, David G. Burke, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q for the fiscal quarter ended June 27, 2010, of
Diversified Restaurant Holdings, Inc. (the Company); 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 present in this report; 4. The registrants other certifying officer(s) 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 13-a-15(f) and 15d-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;  (b)
    
    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 the preparation of
financial statements for external purposes in accordance with generally accepted accounting
principals;  (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; and  (d)
    
    Disclosed in this report any change in the registrants internal control over
financing reporting that occurred during the registrants most recent fiscal quarter (the
registrants fourth fiscal quarter in the case of an annual report) 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(s) 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 reasonable likely to adversely
affect the registrants ability to record, process, summarize and report financial information;
and  (b)
    
    Any fraud, whether or not material, that involved management or other
employees who have a significant role in the registrants internal control over financial
reporting. Dated: August 10, 2010 DIVERSIFIED RESTAURANT HOLDINGS, INC. By: /s/ David G. Burke
 David G. Burke