Exhibit 21.1

SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY SUBSIDIARIES AS OF July 3, 2026
Seagate Technology Holdings Public Limited CompanyIreland
Seagate Technology Holdings Public Limited Company - Singapore BranchSingapore
Seagate Technology Unlimited CompanyIreland
Seagate Systems Ireland LimitedIreland
Seagate Data Storage Technology Pte. Ltd.Singapore
Seagate HDD Cayman
Cayman
Seagate Technology International
Cayman
Seagate International (Johor) Sdn. Bhd.Malaysia
Seagate Technology China Holding CompanyCayman
Seagate Technology Manufacturing (Hong Kong) LimitedHong Kong
Seagate Global Business Services (Malaysia) Sdn. Bhd.Malaysia
Seagate Technology (Thailand) LimitedThailand
Seagate Technology HDD (India) Private LimitedIndia
Seagate Technology (Ireland)Cayman
Seagate Technology (Ireland) (Springtown Branch)United Kingdom
Seagate Brasil Comércio e Representação de Produtos de Informática Ltda.Brazil
Seagate Brasil Comércio e Representação de Produtos de Informática Ltda. (Sao Paulo Branch)Brazil
Seagate Systems (Bermuda) LimitedBermuda
Seagate Systems (Malaysia) Sdn. Bhd.Malaysia
Seagate Systems (UK) LimitedUnited Kingdom
Seagate Systems (Philippines), Inc.Philippines
Seagate Systems (México) S.A. de C.V.Mexico
Seagate Singapore International Headquarters Pte. Ltd.Singapore
Lyve Data Solutions (India) Private LimitedIndia
Intevac Pacific Group Holdings Pte. Ltd.Singapore
Intevac Malaysia Sdn BhdMalaysia
Seagate Manufacturing SG Pte. Ltd.Singapore
Seagate Technology Israel Ltd.Israel
Seagate (Hangzhou) Data Recovery Services Co. Ltd.China
Seagate Technology International (Wuxi) Company LimitedChina
Seagate Technology (Netherlands) B.V.Netherlands
Seagate Technology (Netherlands) B.V. (UK Branch)United Kingdom
Seagate Technology (Netherlands B.V., Filial Sverige Branch)Sweden
Seagate Technology (Netherlands) B.V. (Germany Branch)Germany
Seagate Technology (Netherlands) B.V. (French Branch)France
Seagate Technology (Netherlands) B.V. (Poland Branch)Poland
Seagate Technology (US) Holdings, Inc.Delaware
EVault, Inc.Delaware
Seagate Technology Australia Pty. LimitedAustralia
Seagate Technology Taiwan Ltd.Taiwan
Seagate US LLCDelaware
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Seagate Technology Canada Inc.Canada
Quinta CorporationCalifornia
Seagate Technology LLCDelaware
IRPC, Inc.California
Lotus Technologies, Inc.California
Nippon Seagate Inc.Japan
Seagate Technology MEA FZCODubai
Seagate Technology Services (Shanghai) Co., Ltd.China
Seagate Technology Services (Shanghai) Co., Ltd. (Beijing Branch)China
Seagate Technology Services (Shanghai) Co., Ltd. (Shenzhen Branch)China
Seagate Technology Services (Shanghai) Co., Ltd. (Chengdu Branch)China
Seagate Technology Services (Shanghai) Co., Ltd. (Hangzhou Branch)China


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