Exhibit 21

PPG Industries, Inc.

And Consolidated Subsidiaries

Subsidiaries of the Registrant

December 31, 2023

Significant subsidiaries included in the 2023 consolidated financial statements of the Company are:

United States:		Jurisdiction of Incorporation or Organization	Percentage of Voting Power
	AIPCF V Texstars Blocker Inc.	Delaware	100
	Alpha Coatings, Inc.	Ohio	100
	Cuming Microwave Corporation	Massachusetts	100
	Dexmet Corporation	Delaware	100
	Dexmet Holding Corporation	Delaware	100
	Ennis Canadian Holding Company	Texas	100
	Ennis-Flint, Inc.	North Carolina	100
	Metokote Corporation	Delaware	100
	Metokote Mexico Holdings, Inc.	Ohio	100
	Polymeric Systems, Inc.	Delaware	100
	PPG Advanced Surface Technologies, LLC	Delaware	65
	PPG Architectural Finishes, Inc.	Delaware	100
	PPG Holdings Argentina USA LLC	Delaware	100
	PPG Holdings Latin America USA LLC	Delaware	100
	PPG Industries International, Inc.	Delaware	100
	PPG Industries Ohio, Inc.	Delaware	100
	PPG Industries Securities, LLC	Delaware	100
	PPG Kansai Automotive Finishes U.S., LLC	Delaware	60
	PRC-Desoto International, Inc.	California	100
	Road Infrastructure Investment Holdings, Inc.	Delaware	100
	SEM Products, Inc.	North Carolina	100
	Sierracin Corporation	Delaware	100
	Sierracin/Sylmar Corporation	California	100
	Texstars, LLC	Delaware	100
	The Crown Group Co.	Michigan	100
	Traffic Safety Parent LLC	Delaware	100
	Whitford Corporation	Pennsylvania	100
	Whitford Worldwide Company, LLC	Delaware	100
Other Americas:
	Comercial Mexicana de Pinturas, S.A. de C.V.	Mexico	100
	Comex Industrial Coatings, S.A. de C.V.	Mexico	100
	Consorcio Comex, S.A. de C.V.	Mexico	100
	Cristacol S.A.	Argentina	100
	Distribuidora Kroma, S.A. de C.V.	Mexico	100
	Empresa Aga, S.A. de C.V.	Mexico	100
	Ennis Paint Canada ULC	Alberta	100
	Fpu Industrial, S.A. de C.V.	Mexico	100
	Grupo Comex, S.A. de C.V.	Mexico	100
	Metokote Canada ULC	Canada	100

	Metokote de Mexico S. de R.L. de C.V.	Mexico	100
	Plásticos Envolventes, S.A. de C.V.	Mexico	100
	PPG ALESCO Automotive Finishes Mexico, S. de R.L. de C.V.	Mexico	60
	PPG A P Resinas, S.A. de C.V.	Mexico	100
	PPG Architectural Coatings (Puerto Rico) Inc.	Puerto Rico	100
	PPG Architectural Coatings Canada Inc./ PPG Revêtements Architecturaux Canada Inc.	Canada	100
	PPG Business Services, S.A. de C.V.	Mexico	100
	PPG Canada Inc.	Canada	100
	PPG Industrial do Brasil - Tintas E. Vernizes - Ltda.	Brazil	100
	PPG Industries Colombia Ltda.	Colombia	100
	PPG Industries de Mexico, S.A. de C.V.	Mexico	100
	PPG Kansai Automotive Finishes Canada, LP	Canada	60
	Viasa, S.A. de C.V.	Mexico	100
EMEA:
	AS Tikkurila	Estonia	100
	Chorlton Trade Paints Limited	United Kingdom	100
	Ennis Paint U.K. Holding Company Limited	England and Wales	100
	EPIC Insurance Co. Ltd.	Bermuda	100
	Industria Chimica Reggiana I.C.R. SPA	Italy	100
	Johnstone’s Paints Limited	United Kingdom	100
	Kalon Investment Company Limited	United Kingdom	100
	Kalon South Africa Proprietary Limited	South Africa	100
	Metokote UK Limited	United Kingdom	100
	OOO Tikkurila	Russia	100
	Peintures de Paris SAS	France	99.95
	PPG (Austria) Handels GmbH	Austria	100
	PPG AC - France SA	France	99.95
	PPG Architectural Coatings Ireland Limited	Ireland	100
	PPG Architectural Coatings Italy S.r.l	Italy	100
	PPG Architectural Coatings UK Limited	United Kingdom	100
	PPG Cetelon Lackfabrik GmbH	Germany	100
	PPG Cieszyn S.A.	Poland	100
	PPG Coatings B.V.	The Netherlands	100
	PPG Coatings Belgium B.V.	Belgium	100
	PPG Coatings Danmark A/S	Denmark	100
	PPG Coatings Deutschland GmbH	Germany	100
	PPG Coatings Europe B.V.	The Netherlands	100
	PPG Coatings Nederland B.V.	The Netherlands	100
	PPG Coatings S.A.	France	99.9
	PPG Coatings South Africa (Pty) Ltd.	South Africa	100
	PPG Deco Czech a.s.	Czech Republic	100
	PPG Deco Polska sp. z.o.o.	Poland	100
	PPG Deco Slovakia, s.r.o.	Slovakia	100
	PPG Deutschland Business Support GmbH	Germany	100
	PPG Deutschland Sales & Services GmbH	Germany	100
	PPG Distribution S.A.S.	France	99.95
	PPG DYRUP, S.A.	Portugal	100
	PPG Europe B.V.	The Netherlands	100

PPG Finance B.V.	The Netherlands	100
PPG Finland Oy	Finland	100
PPG France Business Support S.A.S.	France	100
PPG France Manufacturing S.A.S.	France	100
PPG Guadeloupe S.A.S.	Guadeloupe	100
PPG Hemmelrath Lackfabrik GmbH	Germany	100
PPG Holdco S.A.S.	France	100
PPG Holdings (U.K.) Limited	United Kingdom	100
PPG Ibérica Sales & Services, S.L.	Spain	100
PPG Ibérica, S.A.	Spain	100
PPG Industrial Coatings B.V.	The Netherlands	100
PPG Industries (UK) Ltd	United Kingdom	100
PPG Industries Czech Republic, s.r.o.	Czechia	100
PPG Industries Delfzijl B.V.	The Netherlands	100
PPG Industries Europe Sàrl	Switzerland	100
PPG Industries France S.A.S.	France	100
PPG Industries Italia S.r.l.	Italy	100
PPG Industries Kimya a Sanayi VE Ticaret AS	Turkey	100
PPG Industries Lackfabrik GmbH	Germany	100
PPG Industries Middle East FZE	U.A.E.	100
PPG Industries Netherlands B.V.	The Netherlands	100
PPG Industries Poland Sp. Z.o.o.	Poland	100
PPG Italia Business Support S.r.l.	Italy	100
PPG Italia Sales & Services S.r.l.	Italy	100
PPG Kansai Automotive Finishes U.K. LLP	United Kingdom	60
PPG Luxembourg Finance S.àR.L.	Luxembourg	100
PPG Luxembourg Holdings S.àR.L.	Luxembourg	100
PPG Refinish Distribution Limited	United Kingdom	100
PPG Réunion S.A.S.	La Reunion	51
PPG Romania S.A.	Romania	100
PPG SCM Ireland Ltd.	Ireland	100
PPG Switzerland GmbH	Switzerland	100
PPG Trilak Korlátolt Felelősségü Tárasaság (PPG Trilak Kft.)	Hungary	100
PPG Wörwag Coatings GmbH & Co. KG	Germany	100
PPG Wörwag International GmbH	Germany	100
ProCoatings B.V.	The Netherlands	100
Revocoat France S.A.S.	France	100
Revocoat Iberica SLU	Spain	100
Sealants Europe S.A.S.	France	100
Sigma Marine & Protective Coatings Holding B.V.	The Netherlands	100
SigmaKalon (BC) UK Limited	United Kingdom	100
Tikkurila Norge A/S	Norway	100
Tikkurila Oyj	Finland	100
Tikkurila Sverige AB	Sweden	100
TOO Tikkurila	Kazakhstan	100
Whitford B.V.	The Netherlands	100
Whitford Ltd. (UK)	United Kingdom	100
Whitford S.r.l.	Italy	100

Asia:
	Broad Range Development Limited	Hong Kong	100
	Chengdu Huajia Surface Technology Co., Ltd.	China	100
	Dongguan Huajia Surface Technology Co., Ltd.	China	100
	Foshan Bairun Chemicals Co., Ltd.	China	100
	Hemmelrath Automotive Coatings (Jilin) Co., Ltd.	China	100
	Hemmelrath International Trade (Shanghai) Co., Ltd.	China	100
	Huangshan Huajia Surface Technology Co., Ltd.	China	100
	Jinan Huajia Surface Technology Co., Ltd.	China	100
	PPG Aerospace Materials (Suzhou) Co. Ltd.	China	100
	PPG Asian Paints Private Ltd.	India	50
	PPG Coatings (Hong Kong) Co., Limited	Hong Kong	100
	PPG Coatings (Kunshan) Co., Ltd.	China	100
	PPG Coatings (Malaysia) Sdn. Bhd.	Malaysia	100
	PPG Coatings (Shanghai) Co., Ltd.	China	100
	PPG Coatings (Thailand) Co., Ltd.	Thailand	100
	PPG Coatings (Tianjin) Co., Ltd.	China	100
	PPG Coatings (Wuhu) Company, Ltd.	China	100
	PPG Coatings (Zhangjiagang) Co., Ltd.	China	100
	PPG Coatings Singapore Pte. Ltd.	Singapore	100
	PPG Industries (Korea) Ltd.	Korea, Republic Of	100
	PPG Industries (Singapore) Pte., Ltd.	Singapore	100
	PPG Industries Australia PTY Limited A.C.N. 055 500 939	Australia	100
	PPG Industries New Zealand Limited	New Zealand	100
	PPG Investment (Singapore) Pte. Ltd.	Singapore	100
	PPG Japan Ltd.	Japan	100
	PPG Management (Shanghai) Co., Ltd.	China	100
	PPG Packaging Coatings (Suzhou) Co., Ltd.	China	100
	PPG Paints Trading (Shanghai) Co., Ltd.	China	100
	PPG Performance Coatings (Hong Kong) Limited	Hong Kong	100
	PPG Powder Coatings (Shanghai) Co., Ltd.	China	100
	PPG SSC Co., Ltd.	South Korea	80.01
	PPG Vietnam Co., Ltd.	Vietnam	100
	Protec Pty Ltd.	Australia	100
	PT. PPG Coatings Indonesia	Indonesia	100
	Revocoat (Wuhan) Co., Ltd.	China	100
	Sikar (Shanghai) Trading Co. Ltd.	China	100
	Tikkurila (China) Paints Co., Ltd.	China	100
	Whitford Jiangmen Ltd.	China	100
	Whitford Ltd. (HK)	Hong Kong	100
	Whitford Pte. Ltd.	Singapore	100
	Worwag Coatings (Langfang) Co. Ltd.	China	100