Kirschner is an Austrian surname, and may refer to:
- Aloisia Kirschner, Austrian novelist
- Ann Kirschner, American academic and author
- David Kirschner, American film and television producer
- Denise Kirschner, American mathematical biologist and immunologist
- Diana Kirschner, American psychologist
- Jana Kirschner, Slovak singer
- Marc Kirschner, American biologist
- Martin Kirschner, German surgeon
- Kirschner wire named after him
- Belle Delphine (Mary-Belle Kirschner), British Internet celebrity, model and YouTuber