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Exhibit 21.1
ORGANON & CO.
LIST OF SUBSIDIARIES

Organon & Co., a Delaware corporation, had the U.S. and international subsidiaries shown below as of December 31, 2023. Organon & Co. is not a subsidiary of any other entity. Certain subsidiaries have been omitted as they are not significant in the aggregate.
Name
Country or State
of Incorporation or Organization
Organon Algeria SARL
Algeria
Organon Argentina S.R.L.
Argentina
Organon Pharma Pty Ltd
Australia
Organon Austria GmbH
Austria
Organon Belgium BV
Belgium
Organon Heist BV
Belgium
Organon BH d.o.o.
Bosnia
Organon Farmacêutica Ltda.
Brazil
Organon Canada Inc.
Canada
Organon Chile SpA
Chile
Organon Hong Kong Limited
People’s Republic of China
Organon (Shanghai) Pharmaceutical Technology Co., Ltd.
People’s Republic of China
Organon (Shanghai) Pharmaceutical Trading Co., Ltd.
People’s Republic of China
Organon Colombia S.A.S.
Colombia
Organon Pharma Costa Rica S de R.L.
Costa Rica
Organon Pharma d.o.o.
Croatia
Organon Czech Republic s.r.o.
Czech Republic
Organon Denmark ApS
Denmark
Organon-Ecuador S.A.
Ecuador
Organon Pharmaceutical Egypt LLC
Egypt
Organon R&D Finland Oy
Finland
Novuro Oy
Finland
Organon Finland Oy
Finland
Organon France SAS
France
Organon Healthcare GmbH
Germany
Organon Hungary Korlatolt Felelossegu Tarsasag
Hungary
Fulford (India) Limited
India
Organon (India) Private Limited
India
PT Organon Pharma Indonesia Tbk
Indonesia
Organon (Ireland) Ltd
Ireland
Organon Pharma (Ireland) Limited
Ireland
Organon Pharma Israel Ltd.
Israel
Organon Italia S.r.l.
Italy
Organon Japan Holdings G.K.
Japan
Organon K.K.
Japan
Organon Korea Co., Ltd.
Korea, Republic of



Organon Malaysia Sdn. Bhd.
Malaysia
Organon Comercializadora, S. de R.L. de C.V.
Mexico
Productos Farmaceuticos Organon Mexicana S. de R.L. de C.V.
Mexico
Schering-Plough S.A. de C.V.
Mexico
Servicios Organon S. de R.L. de C.V.
Mexico
Undra, S.A. de C.V.
Mexico
Organon Maroc S.A.R.L.
Morocco
GTS FI B.V.
Netherlands
N.V. Organon
Netherlands
OBS Human Health Holding B.V.
Netherlands
OBS International 9 B.V.
Netherlands
Organon Mexico Holdings B.V.
Netherlands
Organon (I.A.) B.V.
Netherlands
Organon (I.A.) II B.V.
Netherlands
Organon Argentina Holdings B.V.
Netherlands
Organon Asia Holdings B.V.
Netherlands
Organon Foreign Debt Co-Issuer B.V.
Netherlands
Organon Holdings 9 B.V.
Netherlands
Organon International Holdings 9 B.V.
Netherlands
Organon International Holdings B.V.
Netherlands
Organon Japan Holdings B.V.
Netherlands
Organon Participations B.V.
Netherlands
Organon Pharma B.V.
Netherlands
Organon New Zealand Limited
New Zealand
Organon Norway A/S
Norway
Organon Latin America Services S. de R.L.
Panama
Organon Pharma S. de R.L.
Panama
Organon BioSciences Peru S.R.L.
Peru
Organon (Philippines) Incorporated
Philippines
Organon Polska Sp. z.o.o.
Poland
Organon Global Shared Services Center (GSS), Unipessoal Lda.
Portugal
Organon Portugal, Sociedade Unipessoal Lda.
Portugal
Organon Puerto Rico LLC
Puerto Rico
Organon BioSciences S.R.L.
Romania
Organon Limited Liability Company
Russian Federation
Organon d.o.o. Beograd
Serbia
Organon Asia Pacific Services Pte. Ltd.
Singapore
Organon Singapore Pte. Ltd.
Singapore
Organon Slovakia s.r.o.
Slovakia
Organon South Africa Pty Ltd.
South Africa
Organon Salud, S.L.
Spain
Organon Sweden AB
Sweden
Organon Central East GmbH
Switzerland
Organon GmbH
Switzerland



Organon International GmbH
Switzerland
Organon International Services GmbH
Switzerland
Organon KSA GmbH
Switzerland
Organon (Thailand) Ltd.
Thailand
Organon Turkey Ilaclari Limited Sirketi
Turkey
Organon Ukraine Limited Liability Company
Ukraine
Organon Pharma FZ-LLC
United Arab Emirates
Dashtag
United Kingdom
Organon Pharma (UK) Limited
United Kingdom
Organon Limited Liability Company
Vietnam
Alydia Health, Inc.
Delaware, USA
Organon Canada Holdings LLC
Delaware, USA
Organon Global Inc.
Delaware, USA
Organon LLC
Delaware, USA
Organon Pharma Holdings LLC
Delaware, USA
Organon Trade LLC
Delaware, USA
Organon USA LLC
New Jersey, USA







Exhibit 21.1
ORGANON & CO.
LIST OF BRANCHES, REPRESENTATIVE OFFICES
AND SCIENTIFIC OFFICES
The following are branches, representative offices, and scientific offices of Organon & Co. as of December 31, 2023. Certain subsidiaries have been omitted as they are not significant in the aggregate.

Name
Country of Organization
Organon (I.A.) B.V. - Bulgaria Branch
Bulgaria
Organon (Shanghai) Pharmaceutical Technology Co., Ltd. - Beijing Branch
People’s Republic of China
Organon (Shanghai) Pharmaceutical Technology Co., Ltd. - Guangzhou Branch
People’s Republic of China
Organon (Shanghai) Pharmaceutical Technology Co., Ltd. - Hangzhou Branch
People’s Republic of China
Organon (Shanghai) Pharmaceutical Technology Co., Ltd. – Xuhui Branch
People’s Republic of China
Organon (Shanghai) Pharmaceutical Technology Co., Ltd. – Chengdu Branch
People’s Republic of China
Organon Pharma B.V. - Cyprus Branch
Cyprus
Organon Pharmaceutical Egypt LLC – Organon Egypt Scientific Office
Egypt
Organon Pharma B.V. - Estonia Representative Office
Estonia
Organon Central East GmbH - Jordan Representative Office
Jordan
Organon Pharma B.V. - Latvia Representative Office
Latvia
Organon Central East GmbH - Lebanon Representative Office
Lebanon
Organon Pharma B.V. - Lithuania Representative Office
Lithuania
Organon Belgium BV - Luxembourg Branch
Luxembourg
Organon International Services GmbH
Netherlands
Organon Central East GmbH - North Macedonia Representative Office
North Macedonia
Organon KSA GmbH - Saudi Scientific Office
Saudi Arabia
Organon Pharma B.V., Oss - Ljubljana Branch
Slovenia
Organon (I.A.) B.V. - Taiwan Branch
Taiwan, Province of China
The Representative Office of Organon Central East GmbH in Ho Chi Minh City
Vietnam
The Representative Office of Organon Central East GmbH in Hanoi
Vietnam
The Representative Office of Organon Hong Kong Limited in Hanoi
Vietnam