Franciszek Henryk Siła-Nowicki (29 January 1864, in Kraków, Austrian Empire – 3 September 1935, in Zawoja, Poland) was a Young Poland poet, a recreational mountaineer, socialist activist, and designer of the Orla Perć (Eagle's Path) High Tatras mountain trail.
Franciszek Nowicki was the son of Maksymilian Nowicki — a zoologist and pioneer Polish conservationist — and Antonina Kasparek, sister of Franciszek Kasparek, professor of international law, rector of Kraków University, and founder of the first chair in international law in Poland.
As a university student, Nowicki co-edited (with Kazimierz Tetmajer, Andrzej Niemojewski, Artur Górski, and others) a socialist-leaning journal, Ognisko (Focus).
On 5 February 1901 Nowicki proposed to Towarzystwo Tatrzańskie (the Tatras Society) the building of Orla Perć (the Eagle's Trail), which was partly realized in 1903-07.
In 1924 Nowicki retired from teaching, and in 1934 he became an honorary member of the Polish Writers' Union (Związek Zawodowy Literatów Polskich).