Exhibit 8.1

Subsidiaries and Consolidated Variable Interest Entities 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

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

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

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

·Hefei Jing Hong Yun Zhi Network Technology Co., Ltd., incorporated in the PRC

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

Consolidated Variable Interest Entities:

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

·Shenzhen Shi Ji Guang Su Information Technology 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

·Hainan Sogou Information Technology Co., Ltd., incorporated in the PRC