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Exhibit 21.1

IQVIA Holdings Inc.

Subsidiary Listing - as of 12/31/2025
SubsidiaryJurisdiction or State of Organization
159 Solutions, LLCCalifornia
159 Technology Solutions Private LtdIndia
1HQ (NL) B.V.Netherlands
1HQ LimitedUnited Kingdom
1HQ Singapore Pte LtdSingapore
1HQ USA, LLCNew York
Accurate Health Auditing and Consulting Société Anonyme of Coordination Organisation & Health InvestmentsGreece
AECIO IT Solutions India Private Ltd.India
AIT Bioscience LLCIndiana
ALIMED Egészségügyi Szolgáltató Korlátolt Felelősségű TársaságHungary
Allcare Plus Pharmacy LLCMassachusetts
Apira LimitedUnited Kingdom
Apuro.com K.K.Japan
Arc Bio Communications LimitedUnited Kingdom
Ascott Sales Integration Pty LtdAustralia
Asesorias IQVIA Solutions Chile LimitadaChile
Asserta Centroamerica Medicion de Mercados, S.A.Guatemala
Avacare Clinical Research Network (Shanghai) Co., Ltd.China
Battaerd Mansley Pty. Ltd.Australia
Benefit Holding, Inc.North Carolina
Bioaxis Healthcare Southeast Europe Home Health Services Single Member Societe AnonymeGreece
Biofortis, LLCDelaware
Bioteknica, LLCFlorida
Brandshapers LtdIreland
Bridgethorne LimitedUnited Kingdom
BuzzeoPDMA LLCDelaware
BYKAIROS SASFrance


CDS - Centre de Service SASFrance
Cedar Gate Partners, LLCConnecticut
Cedar Gate Services Pvt. Ltd.Nepal
Cedar Gate Technologies, Inc.Delaware
Cedar Gate Technology Solutions, Inc.Delaware
Cegedim Venezuela C.A.Venezuela
Cenduit LimitedUnited Kingdom
Ceuta Healthcare LimitedUnited Kingdom
Ceuta Holdings LimitedUnited Kingdom
Ceuta International LimitedUnited Kingdom
CFS Clinical UK LimitedUnited Kingdom
Citra Health Solutions Datawing, LLCDelaware
Click Consult LimitedUnited Kingdom
Clinical Financial Services, LLCPennsylvania
Clinical Lab Minority Shareholder LimitedUnited Kingdom
Clintec International (Pty) Ltd.South Africa
Clintec International (Thailand) LimitedThailand
Clintec International dooSerbia
Clintec International FZ-LLCUnited Arab Emirates
Clintec International LLCUkraine
Clintec International Ltd.United Kingdom
Clintec International Norway ASNorway
Clintec International Off-Shore S.A.L.Lebanon
Clintec International Pte Ltd.Singapore
Clintec International RUS LLCRussia
Clintec Luxembourg S.A.Luxembourg
Clintec Turkey Medikal ve Farmasotik Hizmetler Ticaret Limited SirketiTurkey
Cogvio, s.r.o.Czechia
Compliant Community Projects (Pty) Ltd.South Africa
CONVEMA Versorgungsmanagement GmbHGermany
CQT Zorg & Gezondheid B.VNetherlands
CRO Solutions LimitedUnited Kingdom


CT Consulting Inc.Philippines
Data Niche Associates, Inc.Illinois
Dataline Software LimitedUnited Kingdom
Datandina Ecuador S.A.Ecuador
Datec Industria e Comercio, Distribudora Grafica e Mala Direta Ltda.Brazil
DAVASO GmbHGermany
Deerwalk, Inc.Delaware
DrugDev LimitedUnited Kingdom
Emerald Star Holdings LLCWashington
Enli Health Intelligence CorporationDelaware
EPG Communication Holdings LimitedUnited Kingdom
EURL IQVIA ALGERIAAlgeria
EUROPEAN PHARMACEUTICAL PROMOTION EPP SASFrance
Excel Life Sciences Private LimitedIndia
FACTFrance
Fallon Medica LLCDelaware
Forcea NVBelgium
Foresight IT Solutions and Consulting India Private LimitedIndia
GCE Clin Solutions LimitedUnited Kingdom
GCE Global Solutions, LLCDelaware
GCE Solutions International, LLCDelaware
GCE Solutions, S. de R.L. de C.V.Mexico
Gen-Pharma (UK) LtdUnited Kingdom
GHA Buyer, Inc.Delaware
GHA Intermediate, Inc.Delaware
Gha Orthopedic Alliance, LLCTexas
Gha Women'S Health Alliance, LLCTexas
Global Cardiovascular Alliance, LLCTexas
Global Crown Investment LimitedHong Kong
Global Healhcare Alliance Holdings, Inc.Texas
Global Healthcare Alliance, Inc.Delaware
Grace Data Corp.California


HCP Management Operations, Inc.Delaware
Healthcare Business Information LimitedUnited Kingdom
Hotel Lot C-8B, LLCNorth Carolina
Iasist Holdco LimitedUnited Kingdom
Iasist SAU Agencia en ChileChile
ILANE SASFrance
IM Associates BVBelgium
ImmunXpertsBelgium
IMR International (Australia) PTY LtdAustralia
IMS (UK) Pension Plan Trustee Company LimitedUnited Kingdom
IMS Health de Venezuela, C.A.Venezuela
IMS Health Group LimitedUnited Kingdom
IMS Health Information Solutions Australia Pty. LtdAustralia
IMS Health Information Solutions India Private Ltd.India
IMS Health Networks LimitedUnited Kingdom
IMS Health Paraguay SrlParaguay
IMS Health Uruguay S.A.Uruguay
IMS Meridian LimitedHong Kong
IMS Meridian Research LimitedBritish Virgin Islands
IMS Software Services Ltd.Delaware
Incarnus Malaysia Sdn BhdMalaysia
Innovex Merger Corp.North Carolina
Innovex Sağlık Hizmetleri Araştırma Pazarlama Danışmanlık Sanayi ve Ticaret Limited ŞirketiTurkey
Innovex Saglik Urunleri Pazarlama ve Hizmet Danismanlik Anonim SirketiTurkey
Inteliquet, Inc.Delaware
Intercontinental Medical Statistics International, Ltd.Delaware
Intercontinental Medical Statistics Kenya Ltd.Kenya
Interface Clinical Services Ltd.United Kingdom
Interstatistik AGSwitzerland
IPP Informacion Promocional y Publicitaria S.A. de C.V.Mexico
IQVIA Medical Development (Dalian) Co., Ltd.China
IQVIA (Thailand) Co., Ltd.Thailand


IQVIA Adriatic d.o.o. za KonzaltingCroatia
IQVIA Afrique de l’Ouest FrancophoneCote d'Ivoire
IQVIA AGSwitzerland
IQVIA Analytics Services Private LimitedIndia
IQVIA Asia Pacific Commercial Holdings LLCNorth Carolina
IQVIA Beteiligungsgesellschaft mbHGermany
IQVIA BioSciences Holdings, LLCDelaware
IQVIA Biotech LLCDelaware
IQVIA Biotech Ltd.United Kingdom
IQVIA Cancer ResearchBelgium
IQVIA Chinametrik LLCDelaware
IQVIA Clinical ABSweden
IQVIA Commercial Deutschland GmbhGermany
IQVIA Commercial Finance Inc.Delaware
IQVIA Commercial GmbH & Co. OHGGermany
IQVIA Commercial I LLCDelaware
IQVIA Commercial Rus LLCRussia
IQVIA Commercial Trading LLCDelaware
IQVIA Consulting and Information Services India Private LimitedIndia
IQVIA CSMS GmbHGermany
IQVIA CSMS US Inc.Delaware
IQVIA Digital Inc.Delaware
IQVIA Finance Ltd.United Kingdom
IQVIA Finland OyFinland
IQVIA FZ-LLCUnited Arab Emirates
IQVIA Government Solutions Inc.Delaware
IQVIA Health Transformation Private LimitedIndia
IQVIA Healthcare - Sole Proprietorship L.L.C.United Arab Emirates
IQVIA Healthcare Consulting LLCPalestine
IQVIA Healthcare for Health Consulting LLCPalestine
IQVIA Hellas Technology Solutions Single Member S.A.Greece
IQVIA Holdings (UK) Ltd.United Kingdom


IQVIA Holdings Asia Pte. Ltd.Singapore
IQVIA Holdings France SASFrance
IQVIA Holdings Inc.Delaware
IQVIA IES Brasil Ltda.Brazil
IQVIA IES Denmark ApSDenmark
IQVIA IES Europe LimitedUnited Kingdom
IQVIA IES European HoldingsUnited Kingdom
IQVIA IES Overseas Holdings LimitedUnited Kingdom
IQVIA IES Puerto Rico Inc.Puerto Rico
IQVIA IES South Africa (Pty) LimitedSouth Africa
IQVIA IES UK LimitedUnited Kingdom
IQVIA Inc.Delaware
IQVIA Information Medical Statistics (Israel) Ltd.Israel
IQVIA Information Solutions GmbHAustria
IQVIA Information, S.A.Spain
IQVIA Integrated Services NLNetherlands
IQVIA Investment Holdings LimitedUnited Kingdom
IQVIA Korea Co. Ltd.Republic of Korea
IQVIA Laboratories (Beijing) Co. Ltd.China
IQVIA Laboratories Asia Pte. Ltd.Singapore
IQVIA Laboratories Canada Inc.Canada
IQVIA Laboratories Holdings LLCDelaware
IQVIA Laboratories Japan K.K.Japan
IQVIA Laboratories LLCNorth Carolina
IQVIA Laboratories LtdUnited Kingdom
IQVIA Lebanon S.a.r.l.Lebanon
IQVIA Life Sciences Solutions (Shanghai) Co., LtdChina
IQVIA Ltd.United Kingdom
IQVIA Maroc S.à r.l.Morocco
IQVIA Medical Development (Hefei) Co., Ltd.China
IQVIA MedTech Inc.Delaware
IQVIA MedTech NVBelgium


IQVIA Operations France SASFrance
IQVIA Pharma Inc.North Carolina
IQVIA Pharma Services Corp.North Carolina
IQVIA Pharmaceutical Marketing Services Ltd.Slovenia
IQVIA Phase One Services LLCKansas
IQVIA Quality Metric Inc.Delaware
IQVIA RDS (India) Private Ltd.India
IQVIA RDS (Shanghai) Co., Ltd.China
IQVIA RDS and Integrated Services Belgium NVBelgium
IQVIA RDS Argentina S.R.L.Argentina
IQVIA RDS Asia Inc.North Carolina
IQVIA RDS Austria GmbHAustria
IQVIA RDS Brasil Ltda.Brazil
IQVIA RDS Bulgaria EOODBulgaria
IQVIA RDS Canada ULCCanada
IQVIA RDS Canada West ULCCanada
IQVIA RDS ChileChile
IQVIA RDS Clindata (Pty.) Ltd.South Africa
IQVIA RDS Clindepharm (Pty.) Ltd.South Africa
IQVIA RDS Colombia S.A.S.Colombia
IQVIA RDS Costa Rica S.A.Costa Rica
IQVIA RDS Czech Republic s.r.o.Czechia
IQVIA RDS d.o.o. BeogradSerbia
IQVIA RDS Denmark A/SDenmark
IQVIA RDS East Africa LimitedKenya
IQVIA RDS East Asia Pte. Ltd.Singapore
IQVIA RDS Eastern Holdings GmbHAustria
IQVIA RDS Egypt LLCEgypt
IQVIA RDS Estonia OUEstonia
IQVIA RDS Finland OyFinland
IQVIA RDS France SASFrance
IQVIA RDS Funding LLCNorth Carolina


IQVIA RDS GesmbHAustria
IQVIA RDS GmbHGermany
IQVIA RDS Guatemala, S.A.Guatemala
IQVIA RDS Hellas Single Member S.A.Greece
IQVIA RDS HoldingsUnited Kingdom
IQVIA RDS Hong Kong LimitedHong Kong
IQVIA RDS Hungary Pharmaceutical Development and Consulting Limited Liability CompanyHungary
IQVIA RDS Inc.North Carolina
IQVIA RDS Ireland Ltd.Ireland
IQVIA RDS Israel Ltd.Israel
IQVIA RDS Italy SRLItaly
IQVIA RDS Latin America LLCNorth Carolina
IQVIA RDS Latvia SIALatvia
IQVIA RDS Malaysia Sdn. Bhd.Malaysia
IQVIA RDS Netherlands B.V.Netherlands
IQVIA RDS Nigeria LimitedNigeria
IQVIA RDS NorwayNorway
IQVIA RDS Panama Inc.Panama
IQVIA RDS Peru S.r.l.Peru
IQVIA RDS Philippines Inc.Philippines
IQVIA RDS Poland Sp. ZooPoland
IQVIA RDS Pty. LimitedAustralia
IQVIA RDS Pty. Ltd.New Zealand
IQVIA RDS Slovakia, s.r.o.Slovakia
IQVIA RDS Software Services LLCDelaware
IQVIA RDS South Africa (Pty.) Ltd.South Africa
IQVIA RDS Spain S.L.Spain
IQVIA RDS Taiwan Ltd.Taiwan
IQVIA RDS UABLithuania
IQVIA RDS UK Holdings Ltd.United Kingdom
IQVIA RDS UkraineUkraine
IQVIA RDS Vietnam LLCVietnam


IQVIA Regional HeadquarterSaudi Arabia
IQVIA Research and Development Solutions Saudi Arabia LimitedSaudi Arabia
IQVIA Romania S.R.L.Romania
IQVIA Services Japan LLC/IQVIA Services Japan G.K.Delaware
IQVIA Site Solutions Japan GKJapan
IQVIA Soluções de Tecnologia do Brasil LtdaBrazil
IQVIA Solutions (NZ) LimitedNew Zealand
IQVIA Solutions (Pty.) Ltd.South Africa
IQVIA Solutions a.s.Czechia
IQVIA Solutions Argentina S.A.Argentina
IQVIA Solutions Asia Pte. LtdSingapore
IQVIA Solutions Australia Holdings Pty. Ltd.Australia
IQVIA Solutions Australia Pty. Ltd.Australia
IQVIA Solutions B.V.Netherlands
IQVIA Solutions Bangladesh LimitedBangladesh
IQVIA Solutions Belgium BVBelgium
IQVIA Solutions Bolivia S.R.L.Bolivia
IQVIA Solutions Bulgaria EoodBulgaria
IQVIA Solutions Canada Inc.Canada
IQVIA Solutions Colombia S.A.Colombia
IQVIA Solutions Consulting Myanmar Company LimitedMyanmar
IQVIA Solutions del Peru S.A.Peru
IQVIA Solutions Denmark ASDenmark
IQVIA Solutions do Brasil Ltda.Brazil
IQVIA Solutions Egypt Ltd.Egypt
IQVIA Solutions Enterprise Management Consulting (Hainan) Co., Ltd.China
IQVIA Solutions Enterprise Management Consulting (Shanghai) Co., Ltd.China
IQVIA Solutions Finance B.V.Netherlands
IQVIA Solutions Finance UK I Ltd.United Kingdom
IQVIA Solutions Finance UK II Ltd.United Kingdom
IQVIA Solutions Finance UK III Ltd.United Kingdom
IQVIA Solutions Finance UK V Ltd.United Kingdom


IQVIA Solutions Global Holdings UK Ltd.United Kingdom
IQVIA Solutions Hong Kong LimitedHong Kong
IQVIA Solutions HQ Ltd.United Kingdom
IQVIA Solutions Ireland LimitedIreland
IQVIA Solutions Italy S.r.l.Italy
IQVIA Solutions Japan LLC/IQVIA Solutions Japan G.K.Delaware
IQVIA Solutions Kazakhstan LLCKazakhstan
IQVIA Solutions Korea Ltd.Republic of Korea
IQVIA Solutions Kuwait for Technical ConsultationsKuwait
IQVIA Solutions Lanka (Private) LimitedSri Lanka
IQVIA Solutions LLCRussia
IQVIA Solutions Luxembourg S.à r.l.Luxembourg
IQVIA Solutions Malaysia Sdn. Bhd.Malaysia
IQVIA Solutions Norway ASNorway
IQVIA Solutions Operations Center Philippines Inc.Philippines
IQVIA Solutions Pakistan (Private) LimitedPakistan
IQVIA Solutions Philippines Inc.Philippines
IQVIA Solutions Poland Sp. z o.oPoland
IQVIA Solutions Portugal, Unipessoal LdaPortugal
IQVIA Solutions Puerto Rico Inc.Puerto Rico
IQVIA Solutions Regional Pte. Ltd.Singapore
IQVIA Solutions Republica Dominicana, S.R.L.Dominican Republic
IQVIA Solutions s.r.o.Slovakia
IQVIA Solutions Saudi Arabia LimitedSaudi Arabia
IQVIA Solutions Services Ltd.Hungary
IQVIA Solutions Taiwan Ltd.Taiwan
IQVIA Solutions Tunisia S.à r.l.Tunisia
IQVIA Solutions UK Investments Ltd.United Kingdom
IQVIA Solutions UK LimitedUnited Kingdom
IQVIA Sweden ABSweden
IQVIA Technology Services Ltd.United Kingdom
IQVIA Technology Solutions Colombia Ltda.Colombia


IQVIA Technology Solutions Egypt LLCEgypt
IQVIA Technology Solutions Romania SrlRomania
IQVIA Technology Solutions s.r.o.Slovakia
IQVIA Technology Solutions s.r.o.Czechia
IQVIA Technology Solutions Ukraine LLCUkraine
IQVIA Technology Tunisia S.à r.l.Tunisia
IQVIA Tibbi Istatistik Ticaret ve Musavirlik Ltd. SirketiTurkey
IQVIA Trading Management Inc.Delaware
IQVIA West AfricaSenegal
IQVIA World Publications Ltd.United Kingdom
IQVIA Zagreb d.o.o.Croatia
IVM Plus GmbHGermany
Kun Tai Medical Development Hong Kong LimitedHong Kong
Kun Tuo Medical Research & Development (Beijing) Co. Ltd.China
Laboratorio Commuq Pharma SLUSpain
LH Perspectives LimitedUnited Kingdom
Linguamatics LimitedUnited Kingdom
Linguamatics Solutions LimitedUnited Kingdom
LINICA, Inc.Japan
M&H Informatics (BD) Ltd.Bangladesh
MCRA (U.K.) Ltd.United Kingdom
MCRA Germany GmbHGermany
MCRA Switzerland GmbHSwitzerland
MCRA, LLCDelaware
MedForce Medical Education, LLCDelaware
Medicines Evaluation Unit LimitedUnited Kingdom
Medpages International Proprietary LimitedSouth Africa
Med-Vantage, Inc.Delaware
Mercados Y Analisis, S.A.Spain
Mercurial Insights Holding Pty. Ltd.Australia
Mercurial Insights Pty. Ltd.Australia
Meridian Research Vietnam Ltd.Vietnam


Metrika Business Intelligence Consulting, Inc.Canada
Mighty myT, IncJapan
MZI Healthcare, LLCFlorida
New Experimental Therapeutics Of San Antonio, LLCTexas
Nexelis EuropeBelgium
Nexelis Group LLCDelaware
Nexelis Marburg GmbHGermany
NEXT BRASIL LTDA.Brazil
Next Texas, LLCTexas
NEXT Virginia, LLCTexas
Novasyte Services Corp.Canada
Novasyte, LLCCalifornia
Novex Pharma Laboratorio S.L.Spain
Nuevo Health Pty LimitedAustralia
Omni Care ConsultBelgium
Open Applications Consulting LimitedIreland
Operaciones Centralizadas Latinoamericana LimitadaChile
Optimum Contact LimitedUnited Kingdom
Orange Health Solutions, Inc.Delaware
Outcome Sciences, LLCDelaware
Penderwood LimitedUnited Kingdom
Pharma Deals LimitedUnited Kingdom
Pharma Strategy Group LimitedUnited Kingdom
Pharmaforce, S.A. de C.V.Mexico
PharmaReview LimitedUnited Kingdom
Pharmaspectra Group Ltd.United Kingdom
Pharmaspectra Informatics Private LimitedIndia
Phoenix Group Holdings, LLCNew Jersey
PJ Monoceros-O K.K.Japan
PJ Monoceros-OO K.K.Japan
Polaris Management Partners, LLCNew Jersey
Polaris Solutions Ltd.Hong Kong


Polaris Solutions, LLCNew York
PR Editions S.A.S.France
Prioritis LimitedUnited Kingdom
Privacy Analytics Inc.Canada
Prometheus Research, LLCConnecticut
PT IQVIA RDS IndonesiaIndonesia
PT IQVIA Solutions IndonesiaIndonesia
Purple Moon Agency LLCColorado
Q Squared Solutions (Pty) LtdSouth Africa
Q Squared Solutions (Quest) LLCDelaware
Q Squared Solutions B.V.Netherlands
Q Squared Solutions BioSciences LLCDelaware
Q Squared Solutions China (Quest) LimitedUnited Kingdom
Q Squared Solutions China LimitedUnited Kingdom
Q Squared Solutions Expression Analysis LLCDelaware
Q Squared Solutions Group Inc.Delaware
Q Squared Solutions Holdings B.V.Netherlands
Q Squared Solutions Holdings LimitedUnited Kingdom
Q Squared Solutions Holdings LLCDelaware
Q Squared Solutions S.A.Argentina
QCare Site Services, Inc.North Carolina
Q-Consult Zorg Groep B.V.Netherlands
QH Research LimitedUnited Kingdom
Q-Talent B.V.Netherlands
Quality Health LimitedUnited Kingdom
Quintiles Benin S.A.R.L.U.Benin
Quintiles Commercial Laboratorio S.L.U.Spain
Quintiles Finance Uruguay S.r.L.Uruguay
Quintiles Mauritius HoldingsMauritius
Quintiles Medical Development (Shanghai) Co., Ltd.China
Quintiles Mexico, S. de R.L. de C.V.Mexico
Quintiles West Africa LimitedGhana


RCA Factory SASFrance
RedPharma SABelgium
REPSCO Promotion SASFrance
REPSCO RECRUTEMENT FORMATION SASFrance
Rules-Based Medicine Inc.Delaware
RxJet Transportation Services Corp.Delaware
Sales & Marketing Outsource Solutions LtdIreland
Salesway SASFrance
Shanghai Illuminera Digital Technology Co., Ltd.China
Simpson Healthcare Executives, LLCConnecticut
Source Informatics LimitedUnited Kingdom
StatFin Estonia OÜEstonia
STI Technologies LimitedCanada
Summit Global Health, LLCConnecticut
Throtle Holdings Inc.Delaware
UAB IQVIA CommercialLithuania
Value Outcomes s.r.o.Czechia
Valuecentric Privacy Solutions LLCDelaware
Vivacity Health Pty. Ltd.Australia
Vorpal Technologies KKJapan
WHIZDOTAI INDIA PRIVATE LIMITEDIndia