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 *
MOONVES LESLIE
   2. Issuer Name and Ticker or Trading Symbol
VIACOM INC [VIA, VIAB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Co-President & Co-COO
(Last)
(First)
(Middle)
1515 BROADWAY		 3. Date of Earliest Transaction (Month/Day/Year)
10/03/2005
(Street)

NEW YORK, NY 10036		 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 B common stock               39,460 D  
Class B common stock               1,098 I By 401(k)
Class B common stock               542 I By IRA
Class B common stock               16 I By Reporting Person's children
Class B common stock               573 I By Spouse - 401(k) Plan (1)

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
Class B Phantom Common Stock Units (2) 10/03/2005   A   2.1547 (3)     (2)(4)   (2) Class B common stock 2.1547 $ 33.0687 2,205.9901 (5) D  
Employee Stock Option (right to buy) (6) $ 36.92               (4) 03/31/2009 Class B common stock 203   203 I By Spouse (1)
Employee Stock Option (right to buy) (6) $ 52.27               (4) 04/01/2010 Class B common stock 335   335 I By Spouse (1)
Employee Stock Option (right to buy) (6) $ 43.165               (4) 04/01/2011 Class B common stock 487   487 I By Spouse (1)
Employee Stock Option (right to buy) $ 47.635               (4) 03/30/2012 Class B common stock 462   462 I By Spouse (1)
Employee Stock Option (right to buy) (6) $ 37.81             04/03/2006 03/28/2013 Class B common stock 992   992 I By Spouse (1)
Employee Stock Option (right to buy) (6) $ 39.01             04/01/2007 03/31/2014 Class B common stock 1,025   1,025 I By Spouse (1)
Employee Stock Option (right to buy) (6) $ 34.87             04/01/2008 03/31/2015 Class B common stock 1,291   1,291 I By Spouse (1)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MOONVES LESLIE
1515 BROADWAY
NEW YORK, NY 10036		       Co-President & Co-COO  

Signatures

 /s/ Moonves, Leslie   10/05/2005
**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).
(1) Reporting Person may be deemed to have acquired a beneficial ownership interest in these securities upon marriage to the owner. The Reporting Person, however, disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or any other purposes.
(2) Phantom common stock units are payable in cash following the Reporting Person's retirement or other termination of service pursuant to Issuer's excess 401(k) plan.
(3) Phantom Common Stock Units credited in respect of hypothetical dividends pursuant to the Issuer's excess 401(k) plan.
(4) Current.
(5) Includes (1) the following class B phantom stock units that were credited as dividends on the indicated dates but not previously reported: 7/1/04, 1.6937; 10/01/04, 1.8057; 1/3/05, 1.915; 4/1/05, 2.0264; and 07/01/05, 2.1946; and (2) 172.9673 phantom units that are held by Mr. Moonves indirectly, though his spouse.
(6) Right to buy under Issuer's long term incentive plan.
 
Remarks:
Since the date of the Reporting Person's last ownership report, he no longer has a beneficial interest in 542 shares of Class B common stock that are held in his former spouse's IRA and were included in the Reporting Person's previous reports.

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