UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549
              ----------------------------------------------------

                                   FORM 10-K/A
                                 Amendment No. 1

(mark one)
[ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange
      Act of 1934 for the fiscal year ended December 28, 2002

[   ] Transition Report Pursuant to Section 13 or 15(d) of the Securities
      Exchange Act of 1934

                          Commission file number 1-8002

                           THERMO ELECTRON CORPORATION
             (Exact name of Registrant as specified in its charter)

Delaware                                                              04-2209186
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)

81 Wyman Street, P.O. Box 9046
Waltham, Massachusetts                                                02454-9046
(Address of principal executive offices)                              (Zip Code)

       Registrant's telephone number, including area code: (781) 622-1000

           Securities registered pursuant to Section 12(b) of the Act:

Title of each class                    Name of each exchange on which registered
--------------------------------       -----------------------------------------
Common Stock, $1.00 par value                            New York Stock Exchange
Preferred Stock Purchase Rights                          New York Stock Exchange
3 1/4% Subordinated Convertible Debentures due 2007      American Stock Exchange
4% Subordinated Convertible Debentures due 2005          American Stock Exchange

           Securities registered pursuant to Section 12(g) of the Act:
                                      None

Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months, and (2) has been subject to the filing requirements for
at least the past 90 days. Yes [ X ] No [  ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference into Part III of this Form 10-K or any
amendment to this Form 10-K. [ ]

Indicate by check mark whether the Registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act). Yes [ X ]  No [   ]

As of June 28, 2002, the aggregate market value of the voting stock held by
nonaffiliates of the Registrant was approximately $2,774,137,000. The stock
price used in this computation was the last sales price on that date.

As of January 24, 2003, the Registrant had 163,187,218 shares of Common Stock
outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

Sections of Thermo Electron Corporation's definitive Proxy Statement for the
Annual Meeting of Shareholders are incorporated by reference into Parts II and
III of this report.




                                    PART III

       Item 13 of the Registrant's Form 10-K for the fiscal year ended December
28, 2002, is hereby amended and restated to read as follows:

Item 13.   Certain Relationships and Related Transactions

       Not applicable.


                                     PART IV

       The Exhibit Index on page 39 of the Registrant's Form 10-K for the fiscal
year ended December 28, 2002, is hereby amended and restated to add Exhibits
10.75, 10.76, and 10.77, which are filed herewith.

Exhibit
Number            Description of Exhibit
-------           ----------------------

 10.75            Restricted Stock Agreement dated February 26, 2003, between
                  the Registrant and Marc N. Casper.

 10.76            Restricted Stock Agreement dated October 13, 2000, between the
                  Registrant and Guy Broadbent.

 10.77            Description of Supplemental Long Term Disability Plan of the
                  Registrant.

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                                   SIGNATURES

       Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Date:  March 27, 2003                      THERMO ELECTRON CORPORATION


                                      By:  /s/ Marijn E. Dekkers
                                           -------------------------------------
                                           Marijn E. Dekkers
                                           President and Chief Executive Officer






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                           THERMO ELECTRON CORPORATION

                                 CERTIFICATIONS

I, Marijn E. Dekkers, certify that:

1.   I have reviewed this annual report on Form 10-K/A of Thermo Electron
     Corporation;

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 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 annual report;

4.   The registrant's other certifying officers and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

     a)  designed such disclosure controls and procedures 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 annual report is
         being prepared;

     b)  evaluated the effectiveness of the registrant's disclosure controls and
         procedures as of a date within 90 days prior to the filing date of this
         annual report (the "Evaluation Date"); and

     c)  presented in this annual report our conclusions about the effectiveness
         of the disclosure controls and procedures based on our evaluation as of
         the Evaluation Date;

5.   The registrant's other certifying officers and I have disclosed, based on
     our most recent evaluation, to the registrant's auditors and the audit
     committee of registrant's board of directors (or persons performing the
     equivalent function):

     a)  all significant deficiencies in the design or operation of internal
         controls which could adversely affect the registrant's ability to
         record, process, summarize and report financial data and have
         identified for the registrant's auditors any material weaknesses in
         internal controls; 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; and

6.   The registrant's other certifying officers and I have indicated in this
     annual report whether or not there were significant changes in internal
     controls or in other factors that could significantly affect internal
     controls subsequent to the date of our most recent evaluation, including
     any corrective actions with regard to significant deficiencies and material
     weaknesses.


Date:  March 27, 2003


                                           /s/ Marijn E. Dekkers
                                           -------------------------------------
                                           Marijn E. Dekkers
                                           President and Chief Executive Officer

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                           THERMO ELECTRON CORPORATION


I, Theo Melas-Kyriazi, certify that:

1.   I have reviewed this annual report on Form 10-K/A of Thermo Electron
     Corporation;

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 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 annual report;

4.   The registrant's other certifying officers and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

     a)  designed such disclosure controls and procedures 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 annual report is
         being prepared;

     b)  evaluated the effectiveness of the registrant's disclosure controls and
         procedures as of a date within 90 days prior to the filing date of this
         annual report (the "Evaluation Date"); and

     c)  presented in this annual report our conclusions about the effectiveness
         of the disclosure controls and procedures based on our evaluation as of
         the Evaluation Date;

5.   The registrant's other certifying officers and I have disclosed, based on
     our most recent evaluation, to the registrant's auditors and the audit
     committee of registrant's board of directors (or persons performing the
     equivalent function):

     a)  all significant deficiencies in the design or operation of internal
         controls which could adversely affect the registrant's ability to
         record, process, summarize and report financial data and have
         identified for the registrant's auditors any material weaknesses in
         internal controls; 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; and

6.   The registrant's other certifying officers and I have indicated in this
     annual report whether or not there were significant changes in internal
     controls or in other factors that could significantly affect internal
     controls subsequent to the date of our most recent evaluation, including
     any corrective actions with regard to significant deficiencies and material
     weaknesses.


Date:  March 27, 2003


                                                         /s/ Theo Melas-Kyriazi
                                                         -----------------------
                                                         Theo Melas-Kyriazi
                                                         Chief Financial Officer

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