Geisel is a surname, and may refer to:
- Ernesto Geisel (1907–1996), a Brazilian military general and politician.
- Theodor Seuss Geisel (1904–1991), otherwise known as Dr. Seuss, a popular children's author.
- Geisel Library, the distinctive main library building at the University of California, named after Dr. Seuss.
| This page or section lists people with the surname Geisel. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link. |