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Exhibit 8.1


Subsidiaries of the Registrant
Legal Name of the SubsidiaryJurisdiction of Organization
trivago Services B.V.The Netherlands
trivago Services US LLCUnited States
weekengo GmbH (1)
Germany
Base7booking.com S.à.r.l. (in liquidation)
Switzerland
Base7Germany GmbHGermany
MyHotelShop GmbH (2)
Germany
MyHotelShop Spain S.L. (2)
Spain
TGO (Thailand) Ltd.Thailand
trivago Hong Kong Ltd.Hong Kong
trivago (Shanghai) Information Consulting Co. Ltd. (in liquidation)
China
trivago Hotel Relations GmbHGermany
Trivago Hotel Relations Spain S.L.USpain
Tell Charlie B.V. (in liquidation)
The Netherlands
Stichting trivago WarehousingThe Netherlands

(1) On January 12, 2021, we acquired 100% of weekengo GmbH ("Weekengo") pursuant to an agreement dated December 23, 2020.
(2) As of December 31, 2020, we held a share in myhotelshop GmbH of 49.0% and we did not have a controlling financial interest in myhotelshop. Myhotelshop Spain S.L. is a 100% subsidiary of myhotelshop GmbH. In December 2020, we entered into an agreement to sell our minority interest in myhotelshop to the majority shareholder of myhotelshop. The transaction closed on January 28, 2021.