Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Ianniello Joseph R
2. Date of Event Requiring Statement (Month/Day/Year)
07/20/2005
3. Issuer Name and Ticker or Trading Symbol
VIACOM INC [VIA, VIAB]
(Last)
(First)
(Middle)
1515 BROADWAY
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP and Treasurer
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10036
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 Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Class B common stock 826
D
 
Class B common stock 832
I
By 401(k)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Class B Phantom Common Stock Units   (1)   (1) Class B common stock 308 $ (1) D  
Employee Stock Option (right to buy) (2)   (3) 01/26/2009 Class B common stock 8,680 $ 31.5 D  
Employee Stock Option (right to buy) (2)   (3) 03/31/2009 Class B common stock 406 $ 36.92 D  
Employee Stock Option (right to buy) (2)   (3) 01/25/2010 Class B common stock 16,275 $ 56.27 D  
Employee Stock Option (right to buy) (2)   (3) 04/01/2010 Class B common stock 324 $ 52.27 D  
Employee Stock Option (right to buy) (2)   (3) 04/01/2011 Class B common stock 463 $ 43.165 D  
Employee Stock Option (right to buy) (2)   (3) 01/30/2012 Class B common stock 20,000 $ 39.5 D  
Employee Stock Option (right to buy) (2)   (3) 03/30/2012 Class B common stock 504 $ 47.635 D  
Employee Stock Option (right to buy) (2)   (3) 01/29/2013 Class B common stock 30,000 $ 39.33 D  
Employee Stock Option (right to buy) (2) 04/03/2006 03/28/2013 Class B common stock 926 $ 37.81 D  
Employee Stock Option (right to buy) (2)   (3) 01/28/2014 Class B common stock 35,000 $ 40.39 D  
Employee Stock Option (right to buy) (2)   (4) 01/26/2013 Class B common stock 24,500 $ 37.38 D  
Employee Stock Option (right to buy) (2)   (3) 01/31/2011 Class B common stock 15,000 $ 55.2 D  
Restricted Stock Units (5)   (6)   (6) Class B common stock 4,375 $ 0 (6) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Ianniello Joseph R
1515 BROADWAY
NEW YORK, NY 10036
      SVP and Treasurer  

Signatures

/s/ Ianniello, Joseph R 07/28/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) 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.
(2) Right to buy under Issuer's long term incentive plan.
(3) Current
(4) This option vests in four equal annual installments beginning on January 26, 2006.
(5) Issued under Issuer's long term incentive plan.
(6) The Restricted Stock Units will vest in four equal annual installments beginning on January 26, 2006 and will be settled by delivery of a corresponding number of shares of the Issuer's Class B Common Stock upon vesting.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.