Schnell is a surname of German origin meaning fast or quickly and may refer to:
- Claude Schnell (contemporary), heavy metal keyboardist
- Edward Schnell (fl. mid-19th century), German arms dealer in Japan; brother of Henry Schnell
- F. Wolfgang Schnell (1913-2006), German professor of applied genetics and plant breeding
- Georg H. Schnell (1878–1951), German film actor
- Henry Schnell (fl. mid-19th century), German arms dealer in Japan; brother of Edward Schnell
- Ray Schnell (1893–1970), American politician from North Dakota; state legislator and lieutenant governor
- Ryan Schnell (born 1989), American ice hockey player
- Santiago Schnell (contemporary), biophysical chemistry and computational biologist
- Siegfried Schnell (1916–1944), German ace fighter pilot in the Luftwaffe during WW II
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