Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
TWAALFHOVEN MARK
   2. Issuer Name and Ticker or Trading Symbol
AMPHENOL CORP /DE/ [APH] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SR VP & GGM COMM CONNECTORS
(Last)
(First)
(Middle)
1912 CONVENTION PLAZA APTS.-1 HARBOUR RD		 3. Date of Earliest Transaction (Month/Day/Year)
04/25/2005
(Street)

WANCHAI, HONG KONG 		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 04/25/2005   M   50 A $ 6.5 50 D  
Class A Common Stock 04/25/2005   M   50 A $ 8 100 D  
Class A Common Stock 04/25/2005   M   50 A $ 9.5469 150 D  
Class A Common Stock 04/25/2005   M   50 A $ 12.8594 200 D  
Class A Common Stock 04/25/2005   M   32,000 A $ 24.7813 32,200 D  
Class A Common Stock 04/25/2005   M   4,400 A $ 20.615 36,600 D  
Class A Common Stock 04/25/2005   M   6,200 A $ 20.09 42,800 D  
Class A Common Stock 04/25/2005   S   42,800 D $ 39.7715 0 D  
Class A Common Stock 04/26/2005   M   50 A $ 6.5 50 D  
Class A Common Stock 04/26/2005   M   50 A $ 9.5469 100 D  
Class A Common Stock 04/26/2005   M   50 A $ 12.8594 150 D  
Class A Common Stock 04/26/2005   M   12,000 A $ 24.7813 12,150 D  
Class A Common Stock 04/26/2005   M   6,300 A $ 30.15 18,450 D  
Class A Common Stock 04/26/2005   M   50 A $ 8 18,500 D  
Class A Common Stock 04/26/2005   S   18,500 D $ 40.1624 0 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option $ 6.5 04/25/2005   M     50 05/19/2002 05/19/2007 Class A Common Stock 50 $ 0 150 D  
Stock Option $ 6.5 04/26/2005   M     50 05/19/2002 05/19/2007 Class A Common Stock 50 $ 0 100 D  
Stock Option $ 8 04/25/2005   M     50 10/26/2003 10/26/2008 Class A Common Stock 50 $ 0 150 D  
Stock Option $ 8 04/26/2005   M     50 10/26/2003 10/26/2008 Class A Common Stock 50 $ 0 100 D  
Stock Option $ 9.5469 04/25/2005   M     50 04/22/2004 04/22/2009 Class A Common Stock 50 $ 0 150 D  
Stock Option $ 9.5469 04/26/2005   M     50 04/22/2004 04/22/2009 Class A Common Stock 50 $ 0 100 D  
Stock Option $ 12.8594 04/25/2005   M     50 10/01/2004 10/01/2009 Class A Common Stock 50 $ 0 150 D  
Stock Option $ 12.8594 04/26/2005   M     50 10/01/2004 10/01/2009 Class A Common Stock 50 $ 0 100 D  
Stock Option $ 20.09 04/25/2005   M     6,200 04/15/2004 04/15/2013 Class A Common Stock 6,200 $ 0 18,000 D  
Stock Option $ 20.615 04/25/2005   M     4,400 04/25/2004 04/25/2011 Class A Common Stock 4,400 $ 0 4,400 D  
Stock Option $ 21.905             05/02/2004 05/02/2012 Class A Common Stock 19,400   19,400 D  
Stock Option $ 24.7813 04/25/2005   M     32,000 06/06/2004 06/06/2010 Class A Common Stock 32,000 $ 0 24,200 D  
Stock Option $ 24.7813 04/26/2005   M     12,000 06/06/2004 06/06/2010 Class A Common Stock 12,000 $ 0 12,200 D  
Stock Option $ 30.15 04/26/2005   M     6,300 04/16/2005 04/16/2014 Class A Common Stock 6,300 $ 0 25,200 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
TWAALFHOVEN MARK
1912 CONVENTION PLAZA APTS.-1 HARBOUR RD
WANCHAI, HONG KONG 		       SR VP & GGM COMM CONNECTORS  

Signatures

 Edward C. Wetmore, POA   04/27/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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