anna of sagan (polish: "anna żagańska", czech: "anna zaháňská", also "hlohovsko-zaháňská" or "zaháňsko-hlohovská") (b. ca. 1480, d. 27 or 28 october 1541) was the last surviving member of the głogów-żagań branch of the silesian piasts family, and by marriage duchess of münsterberg and oels.