Exhibit 8.1

List of significant subsidiaries and VIEs of the Registrant

Wholly-Owned Subsidiaries:

·Sogou (BVI) Limited, incorporated in the British Virgin Islands

·Beijing Sogou Technology Development Co., Ltd., incorporated in the PRC

·Sogou Hong Kong Limited, incorporated in Hong Kong

·Vast Creation Advertising Media Services Limited, incorporated in Hong Kong

·Beijing Sogou Network Technology Co., Ltd., incorporated in the PRC

·Sogou Technology Hong Kong Limited, incorporated in Hong Kong

·Sogou (Shantou) Internet Microcredit Co., Ltd., incorporated in the PRC

·Sogou (Hangzhou) Intelligent Technology Co., Ltd., incorporated in the PRC

· Shantou Ying Zhong Bai Fu Financing Guarantee Co.,Ltd., incorporated in the PRC

Consolidated Variable Interest Entities:

·Beijing Sogou Information Service Co., Ltd., incorporated in the PRC

·Beijing Shi Ji Si Su Technology Co., Ltd., incorporated in the PRC

·Chengdu Easypay Technology Co., Ltd., incorporated in the PRC

·Consolidated Trust, established in the PRC