================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ----------------- FORM N-PX ----------------- ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-09537 ----------------- MFS CALIFORNIA MUNICIPAL FUND (Exact name of registrant as specified in charter) ----------------- 111 Huntington Avenue, Boston, Massachusetts 02199 (Address of principal executive offices) (Zip code) ----------------- Christopher R. Bohane Massachusetts Financial Services Company 111 Huntington Avenue Boston, Massachusetts 02199 (Name and address of agents for service) Registrant's telephone number, including area code: (617) 954-5000 ----------------- Date of fiscal year end: November 30 Date of reporting period: July 1, 2017 - June 30, 2018 ================================================================================ ITEM 1. PROXY VOTING RECORD. ******************************* FORM N-Px REPORT ******************************* ICA File Number: 811-09537 Reporting Period: 07/01/2017 - 06/30/2018 MFS California Municipal Fund ======================== MFS California Municipal Fund ========================= MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: DEC 08, 2017 Meeting Type: Written Consent Record Date: DEC 08, 2017 # Proposal Mgt Rec Vote Cast Sponsor 1 Amend Fundamental Investment For For Management Restriction Regarding Industry Concentration ========== END NPX REPORT SIGNATURES Pursuant to the requirements of the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Registrant: MFS CALIFORNIA MUNICIPAL FUND By (Signature and Title): David DiLorenzo* ------------------------------------------ David DiLorenzo, President and Principal Executive Officer Date: August 28, 2018 *By (Signature and Title) /s/ Susan A. Pereira ------------------------------------------ Susan A. Pereira, as attorney-in-fact * Executed by Susan A. Pereira on behalf of David DiLorenzo pursuant to a Power of Attorney dated June 1, 2017. (1) (1) Incorporated by reference to MFS Series Trust XIII (File Nos. 2-74959 and 811-03327) Post-Effective Amendment No. 65 filed with the SEC via EDGAR on June 27, 2017.