Table of Contents As filed with the Securities and Exchange Commission on February 21, 2019 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ____________________________________ FORM 20-F (Mark One) Commission file number: 001-09531 TELEFÓNICA, S.A. (Exact name of Registrant as specified in its charter) o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 19 ...