EXHIBIT 21

3M COMPANY AND CONSOLIDATED SUBSIDIARIES (PARENT AND SUBSIDIARIES)

AS OF DECEMBER 31, 2020

Name of Company

Organized Under Law of

Registrant –– 3M Company

Delaware

Consolidated subsidiaries of the Registrant:

3M Financial Management Company

Delaware

3M Global Channel Services, Inc.

Delaware

3M Innovative Properties Company

Delaware

3M Interamerica, Inc.

Delaware

3M Occupational Safety LLC

Delaware

3M Purification Inc.

Delaware

Acelity, Inc.

Delaware

Aearo Holding LLC

Delaware

Aearo Intermediate LLC

Delaware

Aearo LLC

Delaware

Aearo Technologies LLC

Delaware

Capital Safety North America Holdings Inc.

Delaware

Capital Safety North America Intermediate Holdings LLC

Delaware

Ceradyne, Inc.

Delaware

Chiron Holdings, Inc.

Delaware

KCI Holding Company, Inc.

Delaware

KCI International, Inc.

Delaware

KCI Licensing, Inc.

Delaware

KCI USA, Inc.

Delaware

MModal IP LLC

Delaware

MModal LLC

Delaware

Scott Technologies, Inc.

Delaware

3M Unitek Corporation

California

Meguiar's, Inc.

California

3M Health Information Systems, Inc.

Maryland

D B Industries, LLC

Minnesota

MModal MQ Inc.

New Jersey

MModal Services, Ltd.

New Jersey

Kinetic Concepts, Inc.

Texas

3M Australia Pty. Ltd.

Australia

3M Precision Grinding GmbH

Austria

3M Belgium bvba/sprl

Belgium

3M do Brasil Ltda.

Brazil

3M Manaus Industria de Produtos Quimicos Ltda.

Brazil

3M Canada Company - Compagnie 3M Canada

Canada

Capital Safety Group Canada ULC

Canada

KCI Cayman Holdings

Cayman Islands

3M China Limited

China

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

China

3M Investments (China) Co., Ltd.

China

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

China

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

China

3M Purification SAS

France

3M France S.A.S.

France

Capital Safety Group EMEA

France

3M Deutschland GmbH

Germany

3M Real Estate GmbH & Co KG

Germany

Dyneon GmbH

Germany

3M Hong Kong Limited

Hong Kong

3M India Limited

India

KCI Manufacturing Unlimited Company

Ireland

3M ITALIA s.r.l.

Italy

3M Health Care Sales Limited

Japan

3M Japan Limited

Japan

3M Japan Holdings G.K.

Japan


Name of Company

Organized Under Law of

3M Japan Products Limited

Japan

3M Korea High Tech Limited

Korea

3M Korea Ltd

Korea

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

Luxembourg

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

Luxembourg

Medical Holdings Limited

Malta

3M Mexico, Sociedad Anonima de Capital Variable

Mexico

3M Asia Holding B.V.

Netherlands

3M Holding Company B.V.

Netherlands

3M Intermediate Acquisitions B.V.

Netherlands

3M International Group B.V.

Netherlands

3M International Holding B.V.

Netherlands

3M International Investments B.V.

Netherlands

3M West Europe B.V.

Netherlands

KCI Europe Holding B.V.

Netherlands

Systagenix Wound Management B.V.

Netherlands

Systagenix Wound Management Mezz B.V.

Netherlands

3M Panama Pacifico S. de R.L.

Panama

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

Poland

3M Wroclaw spolka z ograniczona odpowiedzialnoscia

Poland

3M Innovation Singapore Pte. Ltd.

Singapore

3M Singapore Pte. Ltd.

Singapore

3M Espana, S.L.

Spain

3M Svenska Aktiebolag

Sweden

3M EMEA GmbH

Switzerland

3M Taiwan Limited

Taiwan

3M Taiwan Optronics Corporation

Taiwan

Alpha Beta Global Tapes and Adhesives Co., Ltd.

Taiwan

3M Thailand Limited

Thailand

3M Asia Pacific UK Holding Ltd

United Kingdom

3M Products Limited

United Kingdom

3M UK Holdings Limited

United Kingdom

3M United Kingdom Public Limited Company

United Kingdom

Capital Safety Acquisitions Limited

United Kingdom

Capital Safety Global Holdings Limited

United Kingdom

KCI UK Holdings Limited

United Kingdom

Scott Health & Safety Limited

United Kingdom

Systagenix Wound Management, Limited

United Kingdom


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