Svitiaz (Ukrainian: Сві́тязь; Belarusian: Свіцязь; Polish: Świtaź; Russian: Свитязь) is the deepest lake in Ukraine, with a maximum depth of 58.4 m. It is the second largest in the country. Svitiaz belongs to groups of Shatsk's lakes, which are located in Polissya (Volyn region) in the utmost north-western corner of Ukraine, close to the borders with Poland and Belarus. The lake is part of Shatsky National Natural Park (Shatsk Raion, Volyn Oblast).