Exhibit 31.1

                                  CERTIFICATION

I,  Anil  K.  Jain,  certify  that:

1.   I  have  reviewed  this  annual  report  on  Form 10-K of APA Optics, Inc.;

2.   Based  on  my  knowledge,  this  annual  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  annual  report;

3.   Based  on  my  knowledge,  the  financial  statements,  and other financial
     information  included  in  this  annual  report,  fairly  represent  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
     annual  report;

4.   APA  Optics,  Inc.'s  other  certifying  officers and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in  Exchange  Act  Rules  13a  and 15(e)) for APA Optics, Inc. and we have:

     a)   Designed  such  disclosure  controls  and  procedures  to  ensure that
          material  information  relating  to  APA  Optics,  Inc., including its
          consolidated  subsidiaries, is made known to us by others within those
          entities,  particularly  during the period in which this annual report
          is  being  prepared;

     b)   Evaluated  the effectiveness of our disclosure controls and procedures
          as of a date and presented in this annual report our conclusions about
          the  effectiveness  of the disclosure controls and procedures based on
          our  evaluation.

     c)   Disclosed  in  this  report  any change in APA Optics, Inc.'s internal
          control  financial  reporting  that  occurred  during  the most recent
          fiscal  quarter  that has materially affected, or is reasonably likely
          to  materially affect, the Company's control over financial reporting.

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

     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 APA Optics, Inc.'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 the registrant's internal
          controls  over  financial  reporting.

June 29, 2004



Signature:  /s/  Anil K. Jain
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Print Name:  Anil K. Jain
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Print Title:  Chief Executive Officer and Chief Financial Officer
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