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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 FORM 20 - F [ REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR 12 ( 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 1934 For the fiscal year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to OR LSHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report : Commission file number : 001-36185 DYNAGAS LNG PARTNERS LP ( Exact name of Registrant as specified in its charter ) Republic of the Marshall Islands ( Jurisdiction of incorporation or organization ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Poseidonos Avenue and Foivis 2 Street 166 74 Glyfada , Athens , Greece ( Address of principal executive offices ) Michael Gregos Poseidonos Avenue and Foivis 2 Street 166 74 Glyfada , Athens , Greece Tel . +30 210 891 7960 ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person ) Title of Each Class Common units representing limited partnership interests 9.00 % Series A Cumulative Redeemable Preferred Units 8.75 % Series B Fixed to Floating Rate Cumulative Redeemable Perpetual Preferred Units Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None Trading Symbol ( s ) DLNG DLNG PRA DLNG PR B Name of Each Exchange on Which Registered New York Stock Exchange New York Stock Exchange New York Stock Exchange