Exhibit 15.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-36246, No. 333-47720, No. 333-107359, No. 333-129460, No. 333-144890, No. 333-169201 and No. 333-213021) of Sina Corporation of our report dated April 26, 2018 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20-F.

/s/ PricewaterhouseCoopers Zhong Tian LLP

PricewaterhouseCoopers Zhong Tian LLP

Beijing, the People’s Republic of China

April 26, 2018