Canny may refer to:
- Canny (attribute), a pleasant attribute
- Canny edge detector, an image operator which uses a multi-stage algorithm to detect edges
Canny is the surname of:
- John Canny, American computer scientist, namesake of the Canny edge detector
- Nicholas Canny (born 1944), Irish historian
- Paddy Canny (1919-2008), Irish fiddler
- Steven Canny (born 1969), English playwright and BBC Executive Producer