Kasner may refer to:
- Angela Merkel, née Kasner (born 1954), German Chancellor
- Edward Kasner (1878–1955), American mathematician, Tutor on Mathematics in the Columbia University Mathematics Department
- Marliese Kasner (born Marliese Miller), Canadian curler from Canwood, Saskatchewan
- Stephen Kasner (born 1970), painter, illustrator, musician, photographer, graphic artist, and magician