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Exhibit 21.1

SUBSIDIARIES OF TE CONNECTIVITY PLC

The following is a list of our subsidiaries as of September 26, 2025, omitting some subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary.

Percentage

Company Name

Country

Owned

TE Connectivity Argentina S.R.L.

Argentina

100%

Grangehurst Enterprises Pty. Ltd.

Australia

100%

TE Connectivity Australia Pty Ltd

Australia

100%

TE Connectivity Austria GmbH

Austria

100%

TE Connectivity Atlantic Financing Ltd. (in liquidation)

Barbados

100%

TE Connectivity Atlantic Holding Ltd. (in liquidation)

Barbados

100%

TE Connectivity Belgium BV

Belgium

100%

Tyco Electronics Holdings (Bermuda) No. 7 Limited

Bermuda

100%

Seacon Produtos e Servicos Opticos e Eletricos Ltda.

Brazil

100%

TE Connectivity Brasil Indústria de Eletrônicos Ltda.

Brazil

100%

TE Connectivity ULC

Canada

100%

Tyco Electronics Canada ULC

Canada

100%

TE Connectivity Industrial y Comercial Chile Limitada

Chile

100%

Deutsch Connectors Trading (Shanghai) Co., Ltd.

China

100%

Fa Zuo Qin Electronics (Shanghai) Co., Ltd.

China

100%

MEAS Shenzhen Limited

China

100%

Measurement Specialties (Chengdu) Ltd.

China

100%

Measurement Specialties (China) Ltd.

China

100%

Measurement Technology (Chengdu) Ltd.

China

100%

Raychem (Shanghai) Trading Limited

China

100%

Raychem Shanghai Cable Accessories Limited

China

100%

Schaffner EMC Ltd., Shanghai

China

100%

Sibas Electronics (Xiamen) Co., Ltd.

China

100%

TE Connectivity (Kunshan) Company Limited

China

100%

TE Connectivity (Nantong) Co., Ltd.

China

100%

TE Connectivity (Suzhou) Co., Ltd.

China

100%

TE Connectivity (Weifang) Ltd.

China

100%

TE Connectivity Connectors (Suzhou) Co., Ltd.

China

100%

Tyco Electronics (Dongguan) Ltd.

China

100%

Tyco Electronics (Kunshan) Ltd.

China

100%

Tyco Electronics (Qingdao) Ltd.

China

100%

Tyco Electronics (Shanghai) Co., Ltd.

China

100%

Tyco Electronics (Shenzhen) Co., Ltd.

China

100%

Tyco Electronics (Suzhou) Ltd.

China

100%

Tyco Electronics (Zhuhai) Ltd

China

100%

Tyco Electronics AMP Guangdong Ltd

China

100%

Tyco Electronics AMP Qingdao Ltd.

China

100%

Tyco Electronics Technology (SIP) Co., Ltd.

China

100%

TE Connectivity Colombia S.A.S.

Colombia

100%

Creganna Medical, Sociedad de Responsabilidad Limitada

Costa Rica

100%

TE Connectivity Czech s.r.o.

Czech Republic

100%

TE Connectivity Trutnov s.r.o.

Czech Republic

100%

TE Connectivity (Denmark) ApS

Denmark

100%

Tyco Electronics Finland Oy

Finland

100%

Carrier Kheops BAC

France

100%

1


Connecteurs Electriques Deutsch

France

100%

Deutsch

France

100%

Deutsch Group

France

100%

Kemtron

France

100%

Schaffner EMC

France

100%

TE Connectivity Sensors France

France

100%

TE Connectivity Sensors France Holding

France

100%

Tyco Electronics France SAS

France

100%

Tyco Electronics Group S.A. (French Branch)

France

100%

Tyco Electronics Holding France

France

100%

Tyco Electronics Idento

France

100%

TYCO ELECTRONICS-SIMEL

France

100%

ERNI Deutschland GmbH

Germany

100%

ERNI Grundstücksverwaltungs GmbH

Germany

100%

First Sensor AG

Germany

71.45%

First Sensor Lewicki GmbH

Germany

71.45%

First Sensor Mobility GmbH

Germany

100%

Kries Energietechnik GmbH & Co. KG

Germany

100%

TE Connectivity EMEA Holding GmbH

Germany

100%

TE Connectivity Energy GmbH

Germany

100%

TE Connectivity Germany GmbH

Germany

100%

TE Connectivity Industrial GmbH

Germany

100%

TE Connectivity KISSLING Products GmbH

Germany

100%

TE Connectivity Sensors Germany Holding AG

Germany

100%

TE Connectivity Smart Grid GmbH

Germany

100%

TE Connectivity Smart Grid Verwaltung GmbH

Germany

100%

Tyco Electronics Germany Holdings GmbH

Germany

100%

Tyco Electronics Hellas MEPE

Greece

100%

Cregstar Bidco Limited

Guernsey

100%

ERNI Electronics Limited (in liquidation)

Hong Kong

100%

F.A.I. Technology (Hong Kong) Limited

Hong Kong

100%

MEAS Asia Limited

Hong Kong

100%

Raychem China Limited

Hong Kong

100%

TE Connectivity HK Limited

Hong Kong

100%

Tyco Electronics H.K. Limited (in Members' Voluntary Liquidation)

Hong Kong

100%

Tyco Electronics Hong Kong Holdings No. 2 Limited

Hong Kong

100%

Tyco Electronics Hungary Termelő Korlátolt Felelősségű Társaság

Hungary

100%

CII Guardian International Limited

India

39.43%

Deutsch India Power Connectors Private Limited

India

100%

DRI India Relays Private Limited

India

100%

RAYCHEM-RPG Private Limited

India

50%

Schaffner India Private Limited

India

100%

TE Connectivity India Private Limited

India

100%

PT. Tyco Electronics Indonesia

Indonesia

100%

Creganna Medical Ireland Limited

Ireland

100%

Creganna Unlimited Company

Ireland

100%

MEAS Ireland (Betatherm) Limited

Ireland

100%

TE Connectivity Ireland Limited

Ireland

100%

Tyco Electronics Group S.A. (Branch Office)

Ireland

100%

TE Connectivity Israel Ltd.

Israel

100%

TE Connectivity Italia Distribution S.r.l.

Italy

100%

TE Connectivity Italia S.r.l.

Italy

100%

Nikkiso-Therm Co., Ltd.

Japan

50.06%

Schaffner EMC K.K.

Japan

100%

2


TE Connectivity Japan G.K.

Japan

100%

TE Connectivity Japan Holdings G.K.

Japan

100%

Tyco Electronics UK Ltd. (Kenya Branch)

Kenya

100%

Advanced Tube Technologies, Ltd.

Korea, Republic of

50%

Tyco Electronics AMP Korea Co., Ltd.

Korea, Republic of

100%

TE Connectivity (US) Holding II S.à r.l.

Luxembourg

100%

TE Connectivity Holding International I S.à r.l.

Luxembourg

100%

TE Connectivity Holding International II S.à r.l.

Luxembourg

100%

TE Connectivity Holding Luxembourg S. à r.l.

Luxembourg

100%

TE Connectivity Investments Holding S.à r.l.

Luxembourg

100%

TE Connectivity MOG Europe S.a r.l.

Luxembourg

100%

TE Connectivity MOG Holding S.a r.l.

Luxembourg

100%

Tyco Electronics Group S.A.

Luxembourg

100%

TE Connectivity Malaysia Sdn. Bhd.

Malaysia

100%

TE Connectivity Operations Sdn. Bhd.

Malaysia

100%

TE Connectivity Malta Financing LIMITED

Malta

100%

AMP Amermex, S.A. de C.V.

Mexico

100%

Corcom, S.A. de C.V.

Mexico

100%

Hirschmann Car Communication, S. de R.L. de C.V.

Mexico

100%

Potter & Brumfield de Mexico, S.A. de C.V.

Mexico

100%

Seacon Global Production, S. de R.L. de C.V.

Mexico

100%

TE Sensores, S. de R.L. de C.V.

Mexico

100%

Termistores de Tecate, S.A. de C.V.

Mexico

100%

Tyco Electronics Mexico, S. de R.L. de C.V.

Mexico

100%

Tyco Electronics Tecnologias S. de R.L. de C.V.

Mexico

100%

TE Connectivity Morocco SARL

Morocco

100%

TE Connectivity Nederland B.V.

Netherlands

100%

Tyco Electronics NZ Limited

New Zealand

100%

TE Connectivity Technology Solutions Limited

Nigeria

100%

Precision Subsea AS

Norway

100%

TE Connectivity Norge AS

Norway

100%

Tyco Electronics Raychem GMBH (Pakistan Branch)

Pakistan

100%

TE Connectivity Paraguay S.R.L.

Paraguay

100%

TE Connectivity Peru S.A.C.

Peru

100%

TE Connectivity Manufacturing Philippines Inc.

Philippines

100%

Tyco Electronics Philippines, Inc.

Philippines

100%

TE Connectivity Industrial Poland sp. z o.o.

Poland

100%

TE Connectivity Poland Services sp. z o.o.

Poland

100%

Tyco Electronics Polska Sp. z o.o. Oddzial w Szczecinie

Poland

100%

TYCO Electronics Polska Sp.z.o.o.

Poland

100%

Tyco Electronics Componentes Electromecanicos Lda.

Portugal

100%

Arroyo Manufacturing, Inc.

Puerto Rico

100%

TE Connectivity Sensor Solutions S.R.L.

Romania

100%

Tyco Electronics Saudi Arabia Limited

Saudi Arabia

100%

ERNI Asia Holding Pte Ltd

Singapore

100%

Schaffner EMC Pte Ltd

Singapore

100%

Tyco Electronics Singapore Pte Ltd

Singapore

100%

TE Connectivity Slovakia s.r.o.

Slovakia

100%

TE Connectivity South Africa Proprietary Limited

South Africa

100%

microLIQUID, S.L.U.

Spain

100%

TE Connectivity Electronics Spain, S.L.U.

Spain

100%

TE Connectivity Svenska AB

Sweden

100%

ERNI International AG

Switzerland

100%

TE Connectivity Atlantic Switzerland GmbH

Switzerland

100%

3


TE Connectivity MOG Sales GmbH

Switzerland

100%

TE Connectivity Solutions GmbH

Switzerland

100%

TE Connectivity Switzerland Ltd.

Switzerland

100%

Tyco Electronics (Schweiz) Holding II GmbH

Switzerland

100%

Tyco International Services GmbH

Switzerland

49.94%

TE Connectivity Corporation Taiwan Branch

Taiwan

100%

Tyco Electronics Holdings (Bermuda) No. 7 Limited, Taiwan Branch

Taiwan

100%

ERNI Electronics (Thailand) Co., Ltd.

Thailand

100%

Schaffner EMC Co., Ltd.

Thailand

100%

TE Connectivity Distribution (Thailand) Limited

Thailand

100%

TE Connectivity Manufacturing (Thailand) Company Limited

Thailand

100%

Wema Environmental Technologies Ltd.

Thailand

100%

TE Connectivity Tunisia Sarl

Tunisia

100%

Tyco Elektronik AMP Ticaret Limited Sirketi

Turkey

100%

Tyco Electronics Ukraine Limited

Ukraine

100%

Tyco Electronics Middle East FZE

United Arab Emirates

100%

ADC Communications (UK) Ltd.

United Kingdom

100%

Critchley Group Limited

United Kingdom

100%

Kemtron Limited

United Kingdom

100%

Schaffner Limited

United Kingdom

100%

Seacon (Europe) Limited

United Kingdom

100%

TE Connectivity Limited

United Kingdom

100%

TE Connectivity UK Trustee Ltd

United Kingdom

100%

Tyco Electronics Corby Limited

United Kingdom

100%

Tyco Electronics Motors Ltd

United Kingdom

100%

Tyco Electronics UK Holdings Ltd

United Kingdom

100%

Tyco Electronics UK Ltd.

United Kingdom

100%

212 Coit Street LLC

United States

100%

999 Arques Corp.

United States

37.50%

Bradford Holding, LLC

United States

100%

Brantner and Associates, Inc.

United States

100%

Brantner Holding LLC

United States

100%

Chardon Custom Polymers, LLC

United States

100%

Chardon Property Development, LLC

United States

100%

Codenoll Technology Corporation

United States

73.99%

Creganna Medical Devices, Inc.

United States

100%

DRI Relays Inc.

United States

100%

Foundry Medical Innovations, Inc.

United States

100%

Harger, LLC

United States

100%

Howard A. Schaevitz Technologies, Inc.

United States

100%

LADD Distribution LLC

United States

100%

Measurement Specialties, Inc.

United States

100%

MicroGroup, Inc.

United States

100%

OCM Power V Relay CTB, LLC

United States

100%

OCM Power VI Relay CTB, LLC

United States

100%

Precision Interconnect LLC

United States

100%

Precision Wire Components, LLC

United States

100%

Raychem International

United States

100%

Raychem International Manufacturing LLC

United States

100%

Relay Holding, LLC

United States

100%

Relay Intermediate Holding, LLC

United States

100%

Relay Operations Corp.

United States

100%

Relay Parent, LLC

United States

100%

Richards Mfg. Co. Sales, LLC

United States

100%

4


TacPro, LLC

United States

100%

TE Connectivity Corporation

United States

100%

TE Connectivity Malta Financing Limited (U.S. Branch)

United States

100%

TE Connectivity MOG LLC

United States

100%

TE Connectivity US Group Holding II Inc.

United States

100%

TE Connectivity US Group Holding Inc.

United States

100%

The Whitaker LLC

United States

100%

Tyco Electronics Latin America Holding LLC

United States

100%

Tyco Electronics RIMC Holding LLC

United States

100%

Wema Americas LLC

United States

100%

Wi Inc.

United States

100%

TE Connectivity Vietnam Holding Company Limited

Vietnam

100%

5