UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                                Washington, D.C.
                                    Form 13F

                               Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2009

Check here if Amendment [_]; Amendment Number:
                                              ---------------------
     This Amendment (Check only one.): [_] is a restatement.
                                       [_] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:      Bain Capital Venture Investors, LLC*
Address:   111 Huntington Avenue
           Boston, Massachusetts 02199

Form 13F File Number:   28-13588

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Michael Krupka
Title:     Managing Director
Phone:     (617) 516-2000

Signature, Place, and Date of Signing:

  /s/ Michael Krupka              Boston, MA                   11/16/09
- -----------------------   ------------------------   ---------------------------
     [Signature]                 [City, State]                  [Date]

*    Bain Capital Venture Investors, LLC is the administrative member of Bain
     Capital Venture Integral Investors, LLC.

Report Type (Check only one.):

[x]  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
     are reported in this report.)

[_]  13F NOTICE. (Check here if no holdings reported are in this report, and all
     holdings are reported by other reporting manager(s).)

[_]  13F COMBINATION REPORT. (Check here if a portion of the holdings for this
     reporting manager are reported in this report and a portion are reported by
     other reporting manager(s).)

List of Other Managers Reporting for this Manager:

Form 13F File Number   Name
- --------------------   ----------------------
28-

[Repeat as necessary.]




                              Form 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:             1

Form 13F Information Table Entry Total:        4

Form 13F Information Table Value Total:  292,626
                                         -----------
                                         (Thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.

No.   Form 13F File Number   Name
- ---   --------------------   --------------------------------------------
 1    28-13589               Bain Capital Venture Integral Investors, LLC




                      Bain Capital Venture Investors, LLC.
                    Form 13F Information Table as of 9/30/09



   Column 1        Column 2  Column 3   Column 4        Column 3  Column 5   Column 6   Column 7     Column 8
- -----------------  --------  ---------  ----------      --------  --------  ----------  --------  ------------------
                                                                                                   Voting Authority
                   Title of             Shares or        Value     Value    Investment   Other    ------------------
Name of Issuer      Class     Cusip     Prn Amount      (x$1000)  (x$1000)  Discretion  Managers  Sole  Shared  None
- -----------------  --------  ---------  ----------      --------  --------  ----------  --------  ----  ------  ----
                                                                               

NANOSPHERE, INC.      COM    63009F105   1,791,601  SH              12,828   Sole                  X
NEUROMETRIX, INC.     COM    641255104     172,844  SH                 555   Sole                  X
SOLARWINDS, INC.      COM    83416B109  12,565,314  SH             276,814   Sole                  X
VONAGE HLDGS CORP     COM    92886T201   1,747,634  SH               2,429   Sole                  X