Kasner is a surname. Notable people with the surname include:
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
