FORM 10-Q
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


(Mark One)

[x]  Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange
     Act of 1934 For the quarterly period ended
                               SEPTEMBER 30, 2001

[ ]  Transition report pursuant to Section 13 or 15(d) of the Securities
     Exchange Act of 1934
     For the transition period from __________ to __________

                         Commission File Number: 0-13807

                             CABLE TV FUND 12-B, LTD
                Exact name of registrant as specified in charter

            Colorado                                        #84-0969999
- -------------------------------                    -----------------------------
     State of organization                            I.R.S. employer I.D. #

                             c/o Comcast Corporation
                 1500 Market Street, Philadelphia, PA 19102-2148
- --------------------------------------------------------------------------------
                      Address of principal executive office

                                 (215) 665-1700
- --------------------------------------------------------------------------------
                          Registrant's telephone number

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 (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                   Yes  X                                No
                      ------                                -------



                            CABLE TV FUND 12-B, LTD.
                            ------------------------
                             (A Limited Partnership)

                             CONDENSED BALANCE SHEET
                             -----------------------
                                   (Unaudited)



                                                                     September 30,          December 31,
                                        ASSETS                           2001                   2000
                                        ------                      ---------------        ---------------

                                                                                      
Cash                                                                        $93,195               $140,393
                                                                    ---------------        ---------------

                                                                            $93,195               $140,393
                                                                    ===============        ===============


                           LIABILITIES AND PARTNERS' CAPITAL
                           ---------------------------------

LIABILITIES:
   Advances from affiliates.....................................            $12,924                $15,690
                                                                    ---------------        ---------------

         Total liabilities......................................             12,924                 15,690
                                                                    ---------------        ---------------

PARTNERS' CAPITAL:
   General Partner-
     Contributed capital........................................              1,000                  1,000
     Distributions..............................................        (19,696,268)           (19,696,268)
     Accumulated earnings.......................................         19,715,336             19,726,444
                                                                    ---------------        ---------------

                                                                             20,068                 31,176
                                                                    ---------------        ---------------

Limited Partners-
   Net contributed capital (111,035 units outstanding
     at September 30, 2001 and December 31, 2000)...............         47,645,060             47,645,060
   Distributions................................................       (114,620,017)          (114,620,017)
   Accumulated earnings.........................................         67,035,160             67,068,484
                                                                    ---------------        ---------------

                                                                             60,203                 93,527
                                                                    ---------------        ---------------

                                                                            $93,195               $140,393
                                                                    ===============        ===============



                  See notes to condensed financial statements.

                                       1


                            CABLE TV FUND 12-B, LTD.
                            ------------------------
                             (A Limited Partnership)

                        CONDENSED STATEMENT OF OPERATIONS
                        ---------------------------------
                                   (Unaudited)



                                                                      Three Months Ended                 Nine Months Ended
                                                                         September 30,                     September 30,
                                                                    2001              2000              2001            2000
                                                                 -----------       -----------       ----------      ----------

                                                                                                          
OTHER INCOME (EXPENSE):
   Interest income............................................          $920            $5,293           $2,473          $5,293
   Other, net.................................................        (6,345)          (11,170)         (46,905)        (43,884)
                                                                 -----------       -----------       ----------      ----------

NET LOSS......................................................       ($5,425)          ($5,877)        ($44,432)       ($38,591)
                                                                 ===========       ===========       ==========      ==========

ALLOCATION OF NET LOSS:
   General Partner............................................       ($1,356)          ($1,470)        ($11,108)        ($9,648)
                                                                 ===========       ===========       ==========      ==========

   Limited Partners...........................................       ($4,069)          ($4,407)        ($33,324)       ($28,943)
                                                                 ===========       ===========       ==========      ==========

NET LOSS PER LIMITED
   PARTNERSHIP UNIT...........................................        ($0.04)           ($0.04)          ($0.30)         ($0.26)
                                                                 ===========       ===========       ==========      ==========

WEIGHTED AVERAGE NUMBER OF LIMITED
   PARTNERSHIP UNITS OUTSTANDING..............................       111,035           111,035          111,035         111,035
                                                                 ===========       ===========       ==========      ==========



                  See notes to condensed financial statements.

                                       2


                            CABLE TV FUND 12-B, LTD.
                            ------------------------
                             (A Limited Partnership)

                        CONDENSED STATEMENT OF CASH FLOWS
                        ---------------------------------
                                   (Unaudited)



                                                                                           Nine Months Ended
                                                                                             September 30,
                                                                                       2001                  2000
                                                                                   -------------         -------------
                                                                                                     
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net loss.....................................................................       ($44,432)             ($38,591)
   Adjustments to reconcile net loss to net cash
     used in operating activities:
       (Decrease) increase in advances from affiliates..........................         (2,766)                5,230
                                                                                   ------------          ------------

         Net cash used in operating activities..................................        (47,198)              (33,361)
                                                                                   ------------          ------------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Distribution from Cable Television Joint Venture.............................                              213,622
                                                                                   ------------          ------------

         Net cash provided by investing activities..............................                              213,622
                                                                                   ------------          ------------

(Decrease) increase in cash.....................................................        (47,198)              180,261

Cash, beginning of period.......................................................        140,393
                                                                                   ------------          ------------

Cash, end of period.............................................................        $93,195              $180,261
                                                                                   ============          ============

SUPPLEMENTAL CASH FLOW DISCLOSURE:
   Interest paid................................................................            $59                  $649
                                                                                   ============          ============



                  See notes to condensed financial statements.

                                       3


                            CABLE TV FUND 12-B, LTD.
                            ------------------------
                             (A Limited Partnership)

                     NOTES TO CONDENSED FINANCIAL STATEMENTS
                     ---------------------------------------
                                   (Unaudited)

(1)      The condensed  balance sheet as of December 31, 2000 has been condensed
from the audited  balance sheet as of that date. The condensed  balance sheet as
of September 30, 2001,  the condensed  statement of operations for the three and
nine months ended  September 30, 2001 and 2000,  and the condensed  statement of
cash  flows for the nine  months  ended  September  30,  2001 and 2000 have been
prepared  by Cable TV Fund  12-B,  Ltd.  (the  "Partnership")  and have not been
audited by the Partnership's independent auditors. In the opinion of management,
all adjustments  necessary to present fairly the financial position,  results of
operations and cash flows as of September 30, 2001 and for all periods presented
have been made.

         Certain  information  and note  disclosures  normally  included  in the
Partnership's annual financial statements prepared in accordance with accounting
principles  generally  accepted  in the United  States  have been  condensed  or
omitted. These condensed financial statements should be read in conjunction with
the  financial  statements  and  notes  thereto  included  in the  Partnership's
December  31,  2000  Annual  Report on Form 10-K filed with the  Securities  and
Exchange  Commission.  The results of operations for the periods ended September
30, 2001 are not necessarily indicative of operating results for the full year.

         The Partnership owns no properties directly.  The Partnership owns a 9%
interest in Cable TV Fund 12-BCD Venture (the  "Venture").  The Venture has sold
all of its cable television systems.  The Venture was liquidated in October 2000
and therefore, the Partnership has no investment in the Venture at September 30,
2001 or December 31, 2000.  The  Partnership  and the Venture have  continued in
existence because of pending litigation in which the Partnership and the Venture
are a party. It cannot be predicted when the Partnership and the Venture will be
dissolved.

(2)      The   Partnership   reimburses   its   general   partner   for  certain
administrative  expenses.  These  expenses  represent  the  salaries and related
benefits paid for corporate  personnel.  Such personnel provide  administrative,
accounting, tax, legal and investor relations services to the Partnership.  Such
services,  and their related costs, are necessary to the  administration  of the
Partnership  until the  Partnership is dissolved.  Such charges were included in
Other, net in the accompanying condensed statement of operations. Reimbursements
made to the  general  partner by the  Partnership  for  administrative  expenses
during the three and nine month periods ended September 30, 2001 were $2,902 and
$10,389, respectively. Reimbursements made to the general partner by the Venture
for administrative expenses for the three and nine month periods ended September
30, 2000 were $42,787 and $140,477,  respectively,  of which $3,928 and $12,896,
respectively, was attributable to the Partnership.

                                       4


                            CABLE TV FUND 12-B, LTD.
                            ------------------------
                             (A Limited Partnership)

         MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         ---------------------------------------------------------------
                              RESULTS OF OPERATIONS
                              ---------------------


FINANCIAL CONDITION
- -------------------

         The  Venture  was  liquidated  in  October  2000  and  therefore,   the
Partnership  has no investment  in the Venture at September  30, 2001.  The only
asset of the  Partnership  at  September  30, 2001 was its cash on hand which is
being held in reserve to pay the Partnership's administrative expenses until the
Partnership  is dissolved.  The  Partnership  and the Venture have  continued in
existence because of pending litigation in which the Partnership and the Venture
are a party. It cannot be predicted when the Partnership and the Venture will be
dissolved.

RESULTS OF OPERATIONS
- ---------------------

         The  Venture  has  sold all of its  cable  television  systems  and was
liquidated in October 2000.  Other expense of $46,905 incurred in the first nine
months of 2001 by the Partnership  related to various costs  associated with the
administration of the Partnership.

                           Part II - OTHER INFORMATION

Item 1.  Legal Proceedings

         Please  refer to Part II - Item 1 of our June 30,  2001 Form 10-Q for a
discussion of recent developments related to our legal proceedings.

Item 6.  Exhibits and Reports on Form 8-K.

         a)   Exhibits

              None.

         b)   Reports on Form 8-K

              None.



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                                    SIGNATURE


         Pursuant to the  requirements  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.

                                       CABLE TV FUND 12-B, LTD.

                                       BY:   COMCAST CABLE COMMUNICATIONS, INC.
                                             -----------------------------------
                                             General Partner


                                       By:   /S/ Lawrence J. Salva
                                             -----------------------------------
                                             Lawrence J. Salva
                                             Senior Vice President
                                             (Principal Accounting Officer)


Dated:  November 13, 2001




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