Thomas Peter Thorvald Kristian Ferdinand Mortensen, known as an adult as Christian Mortensen (16 August 1882 – 25 April 1998), was an American supercentenarian. By the time he died, he had become the oldest man to ever live whose age is not disputed until 28 December 2012, when Jiroemon Kimura surpassed him. Mortensen was baptized in Fruering Church on 26 December 1882. Besides his baptismal record, other records include the 1890 and 1901 census enumerations in Denmark, and church confirmation in 1896.