Tarka the Otter: His Joyful Water-Life and Death in the Country of the Two Rivers is a highly influential novel by Henry Williamson, first published in 1927 by G.P. Putnam's Sons with an introduction by the Hon. Sir John Fortescue. It won the Hawthornden Prize in 1928 and remains Willamson's best-known and most popular work, having never been out of print since first publication.