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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended November 30 , 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 001-9610 Carnival Corporation ( Exact name of registrant as specified in its charter ) Republic of Panama ( State or other jurisdiction of incorporation or organization ) 59-1562976 ( I.R.S. Employer Identification No. ) 3655 N.W. 87th Avenue Miami , Florida 33178-2428 ( Address of principal executive offices and zip code ) ( 305 ) 599-2600 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common Stock ( $ 0.01 par value ) Trading Symbol ( s ) CCL Commission file number : 001-15136 Carnival plc ( Exact name of registrant as specified in its charter ) England and Wales ( State or other jurisdiction of incorporation or organization ) 98-0357772 ( I.R.S. Employer Identification No. ) Carnival House , 100 Harbour Parade , Southampton SO15 1ST , United Kingdom ( Address of principal executive offices and zip code ) 011 44 23 8065 5000 ( Registrant's telephone number , including area code ) Name of each exchange on which registered New York Stock Exchange , Inc. Ordinary Shares each represented by American Depositary Shares ( $ 1.66 par value ) , Special Voting Share , GBP 1.00 par value and Trust Shares of beneficial interest in the P & O Princess Special Voting CUK New York Stock Exchange , Inc. Trust 1.875 % Senior Notes due 2022 1.000 % Senior Notes due 2029 CUK22 CUK29 New York Stock Exchange LLC New York Stock Exchange LLC Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrants are well - known seasoned issuers , as defined in Rule 405 of the Securities Act . Yes ☑ No ☐ Indicate by check mark if the registrants are not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes ☐ No ☑ Indicate by check mark whether the registrants ( 1 ) have filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrants were required to file such reports ) , and ( 2 ) have been subject to such filing requirements for the past 90 days . Yes ☑ No □ 1