EXHIBIT
31.1





Certificate of Chief
Executive Officer and Chief Financial Officer


Pursuant to Rule
13a-14(a)/15d-14(a)







I,
Douglas P. Baker, certify that:




1. I have
reviewed this quarterly report on Form 10-Q for the quarter ended June 30, 2010
of Applied Nanotech Holdings, Inc. (“APNT”);




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 APNT as of, and for, the periods
presented in this report.




4. APNT’s other
certifying officers and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in the Exchange Act Rules
13a-15(e) and 15d-15(e)) and internal control over financial reporting )as
defined in the Exchange Act Rules 13a – 15(f) and 15d – 15(f)) for APNT 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 APNT, 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 principles;




(c) Evaluated the
effectiveness of APNT’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 APNT’s internal control over financial reporting that
occurred during APNT’s most recent fiscal quarter that has materially affected,
or is reasonably likely to materially affect, APNT’s internal control over
financial reporting; and




5. APNT’s other
certifying officers and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to APNT’s auditors and the audit
committee of APNT’s board of directors:




(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 APNT’s ability to record, process, summarize and report
financial information; and




(b) Any fraud,
whether or not material, that involves management or other employees who have a
significant role in APNT’s internal control over financial
reporting.







Date:   
July 30, 2010




/s/
Douglas P.
Baker


Douglas
P. Baker


Chief
Executive Officer and Chief Financial Officer