| August Bischler | |
| Birth Date: | 29 April 1865 |
| Birth Place: | Karlsruhe, Taurida Governorate, Russian Empire |
| Nationality: | German, Russian, Swiss |
| Work Institution: | University of Zurich, University of Basel |
| Alma Mater: | University of Zurich |
| Known For: | Bischler–Napieralski reaction |
August Bischler (29 April 1865 - 26 May 1957) was a Russian Empire-born ethnic Crimea German chemist who later emigrated to Switzerland. He discovered the Bischler–Möhlau indole synthesis reaction in 1892 and, together with Bernard Napieralski, discovered the Bischler–Napieralski reaction in 1893.
He received his Ph.D. at the University of Zurich 1889 worked at the University of Zurich and from 1899 at the University of Basel. After becoming a Swiss citizen in 1925 he worked in the chemical industry in Geneva.
Bernard Napieralski was a Ph.D. student of Bischler at the University of Zurich in 1893. Napieralski was born in Ostrowy, Poland, 1861.