EXHIBIT 21

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3M COMPANY AND CONSOLIDATED SUBSIDIARIES (PARENT AND SUBSIDIARIES)

AS OF DECEMBER 31, 2020

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Name of Company

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Organized Under Law of

Registrant –– 3M Company

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Delaware

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Consolidated subsidiaries of the Registrant:

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3M Financial Management Company

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Delaware

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3M Global Channel Services, Inc.

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Delaware

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3M Innovative Properties Company

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Delaware

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3M Interamerica, Inc.

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Delaware

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3M Occupational Safety LLC

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Delaware

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3M Purification Inc.

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Delaware

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Acelity, Inc.

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Delaware

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Aearo Holding LLC

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Delaware

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Aearo Intermediate LLC

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Delaware

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Aearo LLC

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Delaware

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Aearo Technologies LLC

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Delaware

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Capital Safety North America Holdings Inc.

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Delaware

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Capital Safety North America Intermediate Holdings LLC

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Delaware

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Ceradyne, Inc.

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Delaware

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Chiron Holdings, Inc.

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Delaware

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KCI Holding Company, Inc.

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Delaware

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KCI International, Inc.

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Delaware

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KCI Licensing, Inc.

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Delaware

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KCI USA, Inc.

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Delaware

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MModal IP LLC

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Delaware

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MModal LLC

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Delaware

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Scott Technologies, Inc.

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Delaware

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3M Unitek Corporation

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California

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Meguiar's, Inc.

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California

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3M Health Information Systems, Inc.

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Maryland

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D B Industries, LLC

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Minnesota

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MModal MQ Inc.

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New Jersey

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MModal Services, Ltd.

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New Jersey

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Kinetic Concepts, Inc.

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Texas

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3M Australia Pty. Ltd.

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Australia

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3M Precision Grinding GmbH

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Austria

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3M Belgium bvba/sprl

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Belgium

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3M do Brasil Ltda.

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Brazil

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3M Manaus Industria de Produtos Quimicos Ltda.

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Brazil

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3M Canada Company - Compagnie 3M Canada

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Canada

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Capital Safety Group Canada ULC

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Canada

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KCI Cayman Holdings

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Cayman Islands

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3M China Limited

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China

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3M International Trading (Shanghai) Co., Ltd.

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China

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3M Investments (China) Co., Ltd.

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China

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3M Material Technology (Suzhou) Co., Ltd.

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China

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3M Specialty Materials (Shanghai) Co., Ltd.

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China

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3M Purification SAS

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France

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3M France S.A.S.

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France

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Capital Safety Group EMEA

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France

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3M Deutschland GmbH

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Germany

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3M Real Estate GmbH & Co KG

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Germany

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Dyneon GmbH

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Germany

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3M Hong Kong Limited

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Hong Kong

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3M India Limited

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India

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KCI Manufacturing Unlimited Company

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Ireland

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3M ITALIA s.r.l.

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Italy

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3M Health Care Sales Limited

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Japan

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3M Japan Limited

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Japan

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3M Japan Holdings G.K.

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Japan


Name of Company

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Organized Under Law of

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3M Japan Products Limited

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Japan

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3M Korea High Tech Limited

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Korea

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3M Korea Ltd

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Korea

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3M Asset Management S.a.r.l.

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Luxembourg

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3M Global Capital S.a.r.l.

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Luxembourg

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Medical Holdings Limited

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Malta

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3M Mexico, Sociedad Anonima de Capital Variable

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Mexico

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3M Asia Holding B.V.

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Netherlands

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3M Holding Company B.V.

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Netherlands

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3M Intermediate Acquisitions B.V.

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Netherlands

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3M International Group B.V.

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Netherlands

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3M International Holding B.V.

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Netherlands

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3M International Investments B.V.

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Netherlands

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3M West Europe B.V.

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Netherlands

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KCI Europe Holding B.V.

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Netherlands

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Systagenix Wound Management B.V.

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Netherlands

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Systagenix Wound Management Mezz B.V.

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Netherlands

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3M Panama Pacifico S. de R.L.

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Panama

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3M Poland Manufacturing Sp. z.o.o.

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Poland

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3M Wroclaw spolka z ograniczona odpowiedzialnoscia

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Poland

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3M Innovation Singapore Pte. Ltd.

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Singapore

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3M Singapore Pte. Ltd.

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Singapore

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3M Espana, S.L.

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Spain

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3M Svenska Aktiebolag

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Sweden

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3M EMEA GmbH

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Switzerland

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3M Taiwan Limited

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Taiwan

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3M Taiwan Optronics Corporation

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Taiwan

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Alpha Beta Global Tapes and Adhesives Co., Ltd.

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Taiwan

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3M Thailand Limited

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Thailand

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3M Asia Pacific UK Holding Ltd

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United Kingdom

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3M Products Limited

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United Kingdom

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3M UK Holdings Limited

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United Kingdom

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3M United Kingdom Public Limited Company

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United Kingdom

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Capital Safety Acquisitions Limited

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United Kingdom

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Capital Safety Global Holdings Limited

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United Kingdom

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KCI UK Holdings Limited

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United Kingdom

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Scott Health & Safety Limited

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United Kingdom

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Systagenix Wound Management, Limited

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United Kingdom


NOTE: Subsidiary companies excluded from the above listing, if considered in the aggregate, would not constitute a significant subsidiary.