The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
Report for the Calendar Year or Quarter Ended: 09-30-2014
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 INVESTORS LLC
Address: JOHN HANCOCK TOWER
200 CLARENDON STREET
BOSTON, MA  02116
Form 13F File Number: 028-11185

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 D. Ward
Title: Managing Director and Chief Operating Officer
Phone: (617) 516-2000
Signature, Place, and Date of Signing:
/s/ Michael D. Ward Boston,  MA 11-14-2014
[Signature] [City, State] [Date]
Bain Capital Investors, LLC (BCI) is the (i) general partner of Bain Capital Partners IX, L.P., which is the general partner of Bain Capital (OSI) IX, L.P., Bain Capital (OSI) IX Coinvestment, L.P, and Bain Capital Fund IX, L.P., which is the sole member of Bain Capital Fund IX, LLC, (ii) general partner of Bain Capital Partners X, L.P., which is the general partner of Bain Capital Fund X, L.P. and the holder all of the Class A shares of Glory Investments B Limited, (iii) general partner of Bain Capital Integral Investors 2008, L.P. (iv) general partner of Bain Capital Partners Europe III, L.P., which is the general partner of Bain Capital Europe Fund III, L.P., which is the sole shareholder of Bain Capital Everest Manager S.a.r.l, which is the general partner of Bain Capital Everest Manager Holding SCA, (v) general partner of Bain Capital Partners VII, L.P., which is the general partner of Bain Capital Fund VII, L.P., which is the sole member of Bain Capital Fund VII, LLC, (vi) general partner of Bain Capital VII Coinvestment Fund, L.P., which is the sole member of Bain Capital VII Coinvestment Fund, LLC, (vii) general partner of Bain Capital Partners Asia II, L.P., which holds all of the Class A shares of Glory Investments A Limited, and (viii) administrative member of Bain Capital Integral Investors, LLC and Bain Capital Integral Investors 2006, LLC. Bain Capital Fund VII, LLC and Bain Capital VII Coinvestment Fund, LLC have the right to appoint two of the three members of UWW Holdings, LLC's board of managers, which acts by majority vote
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).)
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 23
Form 13F Information Table Entry Total: 12
Form 13F Information Table Value Total: 9,973,012
(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.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
No. Form 13F File Number Name
1 028-13942 Bain Capital Partners IX, L.P.
2 028-15075 Bain Capital (OSI) IX, L.P.
3 028-15074 Bain Capital (OSI) IX Coinvestment, L.P.
4 028-13938 Bain Capital Fund IX, L.P.
5 028-16227 Bain Capital Fund IX, LLC
6 028-15506 Bain Capital Partners X, L.P.
7 028-15509 Bain Capital Fund X, L.P.
8 028-15576 Bain Capital Integral Investors 2008, L.P.
9 028-16250 Bain Capital Partners Europe III, L.P.
10 028-16251 Bain Capital Europe Fund III, L.P.
11 028-16255 Bain Capital Everest Manager S.a.r.l.
12 028-16248 Bain Capital Everest Manager Holding SCA
13 028-11660 Bain Capital Partners VII, L.P.
14   Bain Capital Fund VII, L.P.
15   Bain Capital Fund VII, LLC
16 028-11661 Bain Capital VII Coinvestment Fund, L.P.
17 028-11662 Bain Capital VII Coinvestment Fund, LLC
18   UWW Holdings, LLC
19 028-14482 Bain Capital Integral Investors 2006, LLC
20 028-11659 Bain Capital Integral Investors, LLC
21   Bain Capital Partners Asia II, L.P.
22   Glory Investments B Limited
23   Glory Investments A Limited