Theodor Josef Ethofer (October 29, 1849 in Vienna - Leopoldstadt; † October 24, 1915 in Baden near Vienna) was an Austrian painter, known for Figure, genre and Austrian native costume painting.
Theodor Ethofer studied painting at the Academy of Fine Arts Vienna under Carl Wurzinger.
He spent the period from 1872-1887 in Italy, visiting Venice, Florence, Rome, Naples, Sicily, Spain and Tunis, among other places. After a stay in Vienna, he settled in Salzburg in 1898, where he owned a studio in the Künstlerhaus.