Captain Konstantin Sergeyevich Badygin (Russian: Константин Сергеевич Бадигин; 30 November 1910, Penza – 15 March 1984, Moscow), sometimes also transliterated "Badigin", was a Soviet naval officer, explorer, author, and scientist.

Konstantin Sergeyevich Badygin began his naval career in 1928 as a sailor on Soviet ships in the Pacific Ocean. Later he studied in the Marine Technical School at Vladivostok and became a navigator and an officer in the Soviet Navy.

Between 1935 and 1936 he became the third officer aboard Icebreaker Krasin and in 1937 he became the second in command aboard Icebreaker Sedov.

Badygin became renowned in 1938 as captain of icebreaker Sedov when it was transformed into a Soviet Drifting Polar Station. In 1940 Badigin was awarded the title Hero of the Soviet Union for his work aboard the Sedov as both a naval officer and a scientist.

Between 1941 and 1943 he became the Chief of the Soviet ice-breaker fleet in the White Sea as well as the director of the Ice Survey Service.