Frederick August Wenderoth or F. A. Wenderoth (1819 – 1884) was a German-born American painter and photographer. Born and educated in Cassel, where he first learned to paint from his father, he established a lifelong friendship with Charles Christian Nahl at school. During the 1840s period of political upheaval in Hesse, he moved to Paris, where he was joined by Nahl and his half-brother Arthur Nahl.