Smyadovo Cove (Bulgarian: залив Смядово, romanized: zaliv Smyadovo, IPA: [ˈzalif ˈsmʲadovo]) is a 900-meter wide cove indenting for 850 m the west coast of Rugged Island off the west coast of Byers Peninsula of Livingston Island in the South Shetland Islands, Antarctica. Entered north of Ugain Point and south of the southwest extremity of the small peninsula forming Cape Sheffield. Part of the cove's interior and entrance is occupied by Toledo Island and Prosechen Island. The cove is named after the town of Smyadovo in northeastern Bulgaria.