EXHIBIT 21

3M COMPANY AND CONSOLIDATED SUBSIDIARIES (PARENT AND SUBSIDIARIES)

AS OF DECEMBER 31, 2019

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 CB Inc.	Delaware
	MModal IP LLC	Delaware
	MModal LLC	Delaware
	New MMI, Inc.	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
	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 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
	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 United Kingdom Public Limited Company	United Kingdom
	Capital Safety Acquisitions Limited	United Kingdom
	Capital Safety Global Holdings Limited	United Kingdom
	Scott Health & Safety Limited	United Kingdom

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