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: 06-30-2018
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: Russell Investments Group, Ltd.
Address: 1301 Second Avenue
18th Floor
Seattle, WA  98101
Form 13F File Number: 028-17598

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: Mark E. Swanson
Title: Global Head of Fund Services
Phone: 206-505-2086
Signature, Place, and Date of Signing:
/s/ Mark E. Swanson Seattle,  WA 08-08-2018
[Signature] [City, State] [Date]
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: 76
Form 13F Information Table Entry Total: 11,533
Form 13F Information Table Value Total: 47,926,434
(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 28-05990 Acadian Asset Management Inc
2 28-05049 Advent Capital Management, LLC
3 28-05508 AJO, LP
4 28-16348 Alken Asset Management LLP
5 28-10562 AllianceBernstein L.P.
6 28-13214 Ancora Advisors LLC
7 28-10005 Arrowstreet Capital, Limited Partnership
8 28-06437 Atlantic Investment Management, Inc.
9 28-05615 Axiom International Investors LLC
10 28-04825 Baillie Gifford & Co
11 28-01006 Barrow, Hanley, Mewhinney & Strauss, LLC
12 28-15566 BlackRock Asset Management North Asia Limited
13 28-10210 BlackRock Capital Management, Inc.
14 28-12524 BlueBay Asset Management Limited
15 28-02204 Brandywine Global Investment Management, LLC
16 28-07760 Cardinal Capital Management, L.L.C.
17 28-18745 Ceredex Value Advisors LLC
18 28-12126 ClariVest Asset Management LLC
19 28-02405 Cohen & Steers Capital Management, Inc.
20 28-11563 Coho Partners, Ltd.
21 28-14423 Colonial First State
22 28-14668 Copeland Capital Management, LLC
23 28-05268 DePrince, Race & Zollo, Inc.
24 28-04207 Driehaus Capital Management LLC
25 28-15834 Elk Creek Partners, LLC
26 28-10492 Falcon Point Capital, LLC
27 28-14036 Fiera Capital Corporation
28 28-11858 Foyston, Gordon & Payne Inc.
29 28-10957 Genesis Asset Managers, LLP
30 28-17876 GQG Partners, LLC
31 28-04434 Harding Loevner LP
32 28-02013 Harris Associates L.P.
33 28-04321 Heitman Real Estate Securities, LLC
34 28-10437 Hermes Investment Management Limited
35 28-13328 HS Management Partners, LLC
36 28-13410 Impax Asset Management Ltd
37 28-04211 INTECH Investment Management LLC
38 28-12634 Investec Asset Management Limited
39 28-16230 Jackson Square Partners, LLC
40 28-03059 Jacobs Levy Equity Management, Inc.
41 28-18251 Janus Capital International Limited
42 28-14858 Keywise Capital Management (HK) Limited
43 28-15794 Kopernik Global Investors LLC
44 28-12154 Levin Capital Strategies, L.P.
45 28-17488 Maple-Brown Abbott Limited
46 28-13243 Mar Vista Investment Partners, LLC
47 28-03719 McKinley Capital Management, LLC
48 28-13173 MFS Institutional Advisors, Inc.
49 28-11866 Morgan Stanley Investment Management Inc.
50 28-11946 Numeric Investors LLC
51 28-14498 Nuveen Asset Management, LLC
52 28-05050 Oaktree Capital Management, L.P.
53 28-10234 OFI Global Institutional, Inc
54 28-04383 Old Mutual Investment Group (South Africa) Pty. Lt
55 28-10952 Pacific Investment Management Company LLC
56 28-11296 PENN Capital Management Company, Inc.
57 28-10527 Perkins Investment Mgmt LLC
58 28-11073 Polaris Capital Management, LLC
59 28-18343 Polunin Capital Partners Limited
60 28-03791 Pzena Investment Management, LLC
61 28-15708 QV Investors Inc.
62 28-15568 RiverPark Advisors, LLC
63 28-12635 Robeco Institutional Asset Management B.V.
64 28-04760 RREEF America L.L.C.
65 28-01096 Russell Investments Trust Company
66 28-14481 RWC Asset Management
67 28-14100 Sanders Capital, LLC
68 28-16279 Somerset Capital Management LLP
69 28-03426 Suffolk Capital Management, LLC
70 28-11507 Summit Creek Advisors LLC
71 28-11076 Sustainable Growth Advisers, LP
72 28-06683 TCW Asset Management Company
73 28-14622 Timpani Capital Management LLC
74 28-04557 Wellington Management Company, LLP
75 28-06426 Westwood Management Corporation
76 28-17022 William Blair Investment Management LLC