Exhibit 8.1

List of Subsidiaries of SK Telecom Co., Ltd.

(As of December 31, 2017)

Subsidiary Name	Jurisdiction of Incorporation
SK Telink Co., Ltd.	Korea
SK m&service Co., Ltd.	Korea
SK Communications Co., Ltd.	Korea
SK Broadband Co., Ltd.	Korea
K-net Culture and Contents Venture Fund	Korea
PS&Marketing Co., Ltd.	Korea
Service Ace Co., Ltd.	Korea
Service Top Co., Ltd.	Korea
Network O&S Co., Ltd.	Korea
SK Planet Co., Ltd.	Korea
NSOK Co., Ltd.	Korea
Iriver Ltd.	Korea
Iriver Enterprise Ltd.	Hong Kong
Iriver Inc.	U.S.A.
Iriver China Co., Ltd.	China
Dongguan Iriver Electronics Co., Ltd.	China
Groovers JP Ltd.	Japan
SK Telecom China Holdings Co., Ltd.	China
SK Global Healthcare Business Group, Ltd.	Hong Kong
SK Planet Japan	Japan
SKT Vietnam PTE., Ltd.	Singapore
SK Planet Global PTE. Ltd.	Singapore
SKP Global Holdings PTE. Ltd.	Singapore
SKT Americas, Inc.	U.S.A.
SKP America LLC	U.S.A.
YTK Investment Ltd.	Cayman Islands
Atlas Investment	Cayman Islands
SK Telecom Innovation Fund, L.P.	U.S.A.
SK Telecom China Fund I L.P.	Cayman Islands
Shopkick Management Company, Inc.	U.S.A.
Shopkick, Inc.	U.S.A.
SK techx Co., Ltd.	Korea
One Store Co., Ltd.	Korea
Hello Nature Ltd.	Korea
11street (Thailand) Co., Ltd.	Thailand
S.M. Life Design Company Japan Inc.	Japan
S.M. Mobile Communications Japan Inc.	Japan
Home & Service Co., Ltd.	Korea
SK stoa Co., Ltd.	Korea