Kasper may refer to:
- Kasper, a name
- KASPER, the "Kentucky All Schedule Prescription Electronic Reporting" law
- Kasper Andersen, a Danish race car driver
- Kasper Hämäläinen, a Finnish footballer
- Kaspar Hauser, a mysterious foundling in 19th century Germany
- Kasper Schmeichel, a Danish footballer
- Kasperle, a traditional puppet character from Austria and Germany
- Antonín Kasper (disambiguation), multiple people
- Lukas Kaspar, ice hockey player
- Walter Kasper, Catholic Cardinal
- Michael Kasprowicz, an Australian cricketer.
- Kaspar,a 1967 play by the Austrian playwright Peter Handke
- a division of Jones Apparel Group
- a character in the opera Der Freischütz.