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

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.

After the end of World War II Badigin asked to be relieved of active service owing to health reasons.

Its original goal was to sail to Henrietta, Zhokhov, and Jeannette Islands, in the De Long group and carry out scientific research.

Owing to persistent bad weather conditions, part of the stranded crew members and some of the scientists could only be rescued in April 1938.