Stanislas Hernisz (Polish: Stanisław Hernisz) (1805 in Warsaw – 20 April 1866 in London) was a Polish freedom-fighter, journalist, physician, employee of the United States Department of State and sinologist of Jewish descent.
He was born as a son of the Warsaw merchant Gustaw Hernisz and his wife Karolina.
9 from 15 May 1835 he published the article "Polacy wyznania mojżeszowego" (Poles of mosaic faith).
He published 1846 in the Bulletin of the Proceedings of the National Institute for the Promotion of Science a treatise “On the Chinese language”.
After the home-coming to Boston, Hernisz practicised medicine, emphasizing his knowledge of English, French, Spanish, Italian and German languages.