Exhibit 8.1

List of Subsidiaries of SK Telecom Co., Ltd.

(As of December 31, 2018)

Subsidiary Name	Jurisdiction of Incorporation
SK Telink Co., Ltd.	Korea
SK Communications Co., Ltd.	Korea
SK Broadband Co., Ltd.	Korea
PS&Marketing Corporation	Korea
SERVICE ACE Co., Ltd.	Korea
SERVICE TOP Co., Ltd.	Korea
Network O&S Co., Ltd.	Korea
SK Planet Co., Ltd.	Korea
Eleven Street Co., Ltd.	Korea
IRIVER LIMITED	Korea
SK Telecom China Holdings Co., Ltd.	China
SK Global Healthcare Business Group, Ltd.	Hong Kong
SKT Americas, Inc.	USA
YTK Investment Ltd.	Cayman Islands
Atlas Investment	Cayman Islands
One Store Co., Ltd.	Korea
SK Telecom Japan Inc.	Japan
id Quantique SA	Switzerland
Quantum Innovation Fund I	Korea
Life & Security Holdings Co., Ltd.	Korea
SK Infosec Co., Ltd.	Korea
SK m&service Co., Ltd.	Korea
SK Planet Japan, K. K.	Japan
SKP GLOBAL HOLDINGS PTE. LTD.	Singapore
SKP America LLC.	USA
shopkick Management Company, Inc.	USA
shopkick, Inc.	USA
K-net Culture and Contents Venture Fund	Korea
iriver Enterprise Ltd.	Hong Kong
iriver Inc.	USA
iriver China Co., Ltd.	China
Dongguan iriver Electronics Co., Ltd.	China

Subsidiary Name	Jurisdiction of Incorporation
groovers Japan Co., Ltd.	Japan
LIFE DESIGN COMPANY Inc.	Japan
groovers Inc.	Korea
SK TELINK VIETNAM Co., Ltd.	Vietnam
ADT CAPS Co., Ltd.	Korea
CAPSTEC Co., Ltd.	Korea
ADT SECURITY Co., Ltd.	Korea
Id Quantique LLC	Korea
Home & Service Co., Ltd.	Korea
SK stoa Co., Ltd.	Korea
SK Telecom Innovation Fund, L.P	USA
SK Telecom China Fund I L.P.	Cayman Islands