af Uglas is a Swedish surname, meaning 'of Owls'. Notable people with the surname include:
Bertil af Ugglas (1934–1977), Swedish politician and elected official Caroline af Ugglas (born 1972), Swedish singer, artist and chorister Ludvig af Ugglas (1814–1880), Swedish politician and member of the upper house of the Parliament of Sweden Margaretha af Ugglas (1939-2026), Swedish former Moderate Party politician and Minister for Foreign Affairs