Friedrich Hasslwander, also Haßlwander was an Austrian painter and writer.

Friedrich Hasslwander was the son of the painter Joseph Hasslwander (1812–1878), from whom he also received his first training. After attending the Technical University in Vienna in 1859/60, he studied from 1860 to 1867 at the Vienna Art Academy under Carl Wurzinger. Afterwards he worked as a teacher at Viennese middle schools from 1879 until his retirement at the Oberrealschule Vienna IV. From 1877 he was secretary of the Viennese pension association for visual artists.

He mostly painted religious and historical compositions in the romantic spirit and was also active as a writer.