U.S. SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549

                                      FORM 12b-25

                              NOTIFICATION OF LATE FILING

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

For Period Ended: December 31, 1996

/  / 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 ATTACHED INSTRUCTION SHEET 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:
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PART I -- REGISTRANT INFORMATION

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Full Name of Registrant: Viacom Investment Plan
Former Name if Applicable
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Address of Principal Executive Office (Street and Number)

1515 Broadway

City, State and Zip Code

New York, NY 10036
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PART II -- RULES 12b-25(b) AND (c)

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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;

[X]    (b)  The subject annual report, semi-annual report, transition report
            on Form 10-K, Form 20-F, 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.


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PART III -- NARRATIVE

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

                                               (ATTACH EXTRA SHEETS IF NEEDED)
Additional time is required to work through the extensive record-keeping and 
other issues involved in connection with the merger on January 1, 1996 of the 
following defined contribution plans sponsored by subsidiaries of Viacom Inc. 
with and into the Viacom Investment Plan: Paramount Communications Inc. 
Employees' Savings Plan, Prentice Hall Computer Publishing Division 
Retirement Plan and Blockbuster Entertainment Retirement and Savings Plan.

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PART IV -- OTHER INFORMATION

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


           Barbara Mickowski                      (212) 258-6000
                    (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).                 
 
                                                           /X/ Yes  / / No

    (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. See Schedule I attached hereto.



                           VIACOM INVESTMENT PLAN
                 (Name of Registrant as Specified in Charter)

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


    Date: July 1, 1997                            By: /s/ Barbara Mickowski
                                                      ----------------------
                                                       Barbara Mickowski
                                                       Member of the Retirement
                                                             Committee



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.

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