UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING

           (CHECK ONE): /   / Form 10-KSB / / Form 20-F / / Form 11-K
                         / X / Form 10-QSB / / Form N-SAR

   For Period Ended:  March 31, 2006        / / Transition Report on Form 10-K
          / / Transition Report on Form  20-F
          / / Transition Report on Form 11-K
          / / Transition Report on Form 10-Q
          / / Transition Report on Form N-SAR
          For the Transition Period Ended: ______________________________


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READ INSTRUCTION (ON BACK PAGE) BEFORE PREPARING FORM. PLEASE PRINT OR TYPE.
NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY THAT THE COMMISSION HAS
VERIFIED ANY INFORMATION CONTAINED HEREIN.
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If the notification  relates to a portion of the filing checked above,  identify
the Item (s) to which the notification relates:



PART 1 - REGISTRANT INFORMATION

                              Sonex Research, Inc.
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Full Name of Registrant

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Former Name if Applicable
                                23 Hudson Street
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Address of Principal Executive Office (Street and Number)

                              Annapolis, MD 21401
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City, State and Zip Code


PART II - RULES 12b-25(b) AND (c)

     If the subject  report could not be filed  without  unreasonable  effort or
expense  and  the  registrant  seeks  relief  pursuant  to Rule  12b-25(b),  the
following should be completed. (Check box if appropriate)


 /X/    (a) The reasons  described in reasonable detail in Part III of this form
            could not be eliminated without unreasonable effort or expense.
 / /    (b) The subject annual report,  semi-annual report, transition report on
            Form 10-K, Form 20-F, Form 11-K or Form N-SAR, or portion thereof,
		will be filed on or before the fifteenth  calendar day following
            the  prescribed  due  date;  or  the  subject  quarterly  report  or
            transition  report on Form 10-Q, or portion thereof will be filed on
            or before the fifth  calendar day following the prescribed due date;
            and
 / /    (c) The  accountant's  statement or other exhibit  required by Rule 12b-
            25(c) has been attached if applicable.


PART III - NARRATIVE

     State below in reasonable  detail the reasons why Forms 10-K,  20-F,  11-K,
10-Q,  N-SAR, or the transition  report or portion  thereof,  could not be filed
within the prescribed time period.


The  Registrant  has not filed its Annual  Reports on Form  10-KSB for the years
ended  December  31,  2004  and  2005 for a number  of  reasons,  including  the
following primary reasons:  (1) The Registrant lacks the financial  resources to
engage an independent  registered public  accountanting firm to conduct an audit
of the related financial statements. Via letter dated March 29, 2006, its former
independent registered public accountanting firm, Hausser + Taylor LLC, informed
the  Registrant  and the SEC of their  decision  to resign as  auditor.  (2) The
Registrant  lacks the  staffing to prepare the Forms 10-KSB due in large part to
the amount of time management has devoted and the amount of funds the Registrant
has spent in responding to litigation.

For the same  reasons,  the  Registrant  has been  unable to file its  Quarterly
Reports on Form 10-QSB for March 31, 2005, June 30, 2005 and September 30, 2005,
nor will it be able to file its  Quarterly  Report on Form  10-QSB for March 31,
2006 by the extended due date. The Registrant  will use its best efforts to file
the  Forms  10-KSB  and  Forms  10-QSB as soon as its  financial  resources  and
staffing permit. The Registrant,  however,  is unable to predict when it will be
able to make these  filings and there can be no assurance  that the filings will
be made at all.


PART IV - OTHER INFORMATION

(1)  Name and telephone number of person to contact in regard to this
     notification.

         George E. Ponticas          410               266-5556
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              (Name)             (Area code)       (Telephone number)

(2)  Have all other periodic  reports  required under Section 13 or 15(d) of the
     Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
     of 1940 during the preceding 12 months or for such shorter  period that the
     registrant was required to file such report(s) been filed? If answer is no,
     identify report(s).
                                                            /  / Yes   / X / No
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(3)  Is it anticipated that any significant change in results of operations from
     the corresponding  period for the last fiscal year will be reflected by the
     earnings  statements  to be  included  in the  subject  report  or  portion
     thereof?
                                                            /   / Yes   / X / No

     If so, attach an explanation of the anticipated  change,  both  narratively
     and quantitatively, and, if appropriate, state the reasons why a reasonable
     estimate of the results cannot be made.





                              Sonex Research, Inc.
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                  (Name of Registrant as Specified in Charter)

     has caused this  notification to be signed on its behalf by the undersigned
     hereunto duly authorized.



Date: May 12, 2006              By:          /s/ George E. Ponticas
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                                   George E. Ponticas, Chief Financial Officer


INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing  the form  shall  be typed or  printed  beneath  the  signature.  If the
statement is signed on behalf of the registrant by an authorized  representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.

__________________________________ATTENTION____________________________________
     INTENTIONAL MISSTATEMENTS OR OMMISSIONS OF FACT CONSTITUTE FEDERAL
          CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).