Exhibit 8.1

List of Principal Subsidiaries of the Registrant

Principal Subsidiaries

  ​ ​ ​

Place of Incorporation

Tuya (HK) Limited

Hong Kong

Tuya Smart Inc.

U.S.

Tuya Global Inc.

U.S.

Tuyasmart (Colombia) S.A.S

Colombia

Tuya GmbH

Germany

Tuya Japan Co., Ltd.

Japan

Tuyasmart (India) Private Limited

India

Hangzhou Tuya Information Technology Co., Ltd.

PRC

Zhejiang Tuya Smart Electronics Co., Ltd.

PRC

Tuya Smart Australia Pty Ltd

Australia