Exhibit 21

3M COMPANY AND CONSOLIDATED SUBSIDIARIES (PARENT AND SUBSIDIARIES)
AS OF DECEMBER 31, 2023

Name of CompanyOrganized Under Law of
Registrant – 3M Company
Delaware
  Consolidated subsidiaries of the Registrant:
  3M Financial Management CompanyDelaware
  3M Healthcare US Opco LLCDelaware
  3M Innovative Properties CompanyDelaware
  3M Interamerica LLCDelaware
  3M Purification Inc.Delaware
  Acelity, Inc.Delaware
  Aearo Technologies LLCDelaware
  3M Chemical Operations LLCDelaware
  3M Fall Protection CompanyDelaware
  3M Foreign Holding LLCDelaware
  Chiron Holdings, Inc.Delaware
  KCI Holding Company, Inc.Delaware
  KCI International, Inc.Delaware
  KCI USA, Inc.Delaware
  Scott Technologies, Inc.Delaware
  Meguiar's, Inc. California
  3M Health Information Systems, Inc.Maryland
  D B Industries, LLCMinnesota
  MModal Services, Ltd.New Jersey
  Kinetic Concepts, Inc.Texas
  3M Australia Pty. Ltd.Australia
  3M do Brasil Ltda.Brazil
  3M Canada Company - Compagnie 3M CanadaCanada
  Capital Safety Group Canada ULCCanada
  KCI Cayman HoldingsCayman Islands
  KCI Cayman Holdings IICayman Islands
  3M China LimitedChina
  3M Investments (China) Co., Ltd.China
  3M Specialty Materials (Shanghai) Co., Ltd.China
  3M France S.A.S.France
  3M Deutschland GmbHGermany
  3M Healthcare Germany GmbHGermany
  3M Real Estate GmbH & Co KGGermany
  3M Hong Kong LimitedHong Kong
  3M India LimitedIndia
  3M Global Capital LimitedIreland
  3M Healthcare Foreign Holdings 2 LimitedIreland
  KCI Manufacturing Unlimited CompanyIreland
  3M Japan Holdings GKJapan
  3M Japan LimitedJapan
  3M Japan Products LimitedJapan
  3M Korea Co., LtdKorea
  Medical Holdings LimitedMalta
  3M Mexico, Sociedad Anonima de Capital VariableMexico
  3M Healthcare Foreign Holdings B.V.Netherlands
  3M Holding Company B.V.Netherlands
  3M Intermediate Acquisitions B.V.Netherlands
  3M International Group B.V.Netherlands
  3M West Europe B.V.Netherlands
  KCI Europe Holding B.V.Netherlands



Exhibit 21

Name of CompanyOrganized Under Law of
  Systagenix Wound Management Mezz B.V.Netherlands
  3M Wroclaw spolka z ograniczona odpowiedzialnosciaPoland
  3M Innovation Singapore Pte. Ltd.Singapore
  3M Singapore Pte. Ltd.Singapore
  3M Svenska AktiebolagSweden
  3M EMEA GmbHSwitzerland
  3M Asia Pacific UK Holding LtdUnited Kingdom
  3M Products LimitedUnited Kingdom
  3M UK Holdings LimitedUnited Kingdom
  3M United Kingdom Public Limited CompanyUnited Kingdom
  Capital Safety Global Holdings LimitedUnited Kingdom
  Systagenix Wound Management, LimitedUnited Kingdom
    
NOTE: Subsidiary companies excluded from the above listing, if considered in the aggregate, would not constitute a significant subsidiary.