Seymour Canal is an inlet penetrating deep into the southeastern part of Admiralty Island, Southeast Alaska, United States. The inlet was first charted in 1794 by Joseph Whidbey, master of HMS Discovery during George Vancouver's 1791–95 expedition. Vancouver later named it "Seymour's Channel". Two large islands are located within it: Swan Island to the north, and Tiedeman Island just to its south.
- U.S. Geological Survey Geographic Names Information System: Seymour Canal
- Vancouver, George, and John Vancouver (1801). A voyage of discovery to the North Pacific ocean, and round the world. London: J. Stockdale.
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