Felix Lewandowsky (October 1, 1879 - October 31, 1921) was a German dermatologist who was a native of Hamburg.
He was born on October 1, 1879 and in 1902 he earned his doctorate at Strassburg. From 1903 until 1907 he worked at the dermatological clinic in Bern where he was an assistant to Josef Jadassohn (1863–1936). Afterwards he returned to Hamburg where he worked in Eduard Arning’s (1855–1936) department at St. Georg's Hospital. In 1917 he was appointed director of the dermatological clinic at Basel.
Lewandowsky specialized in the study of tuberculosis and infantile skin diseases, and in 1916 published an important work on tuberculosis of the skin titled Die Tuberkulose der Haut. With Dr. Jadassohn he described an ectodermal dysplasia now known as Jadassohn-Lewandowsky syndrome, and just prior to his death he described epidermodysplasia verruciformis, a rare skin disease sometimes known as Lewandowsky-Lutz dysplasia (named along with dermatologist Wilhelm Lutz 1888-1958).
He died on October 31, 1921.