Janssen may refer to:
Astronomy
- Janssen (lunar crater)
- Janssen (Martian crater)
- Janssen (planet), an exoplanet also known as 55 Cancri e
Other
- Janssen (surname) is a common Dutch surname, cognate of "Johnson"
- Janssen Biotech, American biotechnology company
- Janssen COVID-19 vaccine, a COVID-19 vaccine
- Janssen Pharmaceuticals, a Belgian company
- USS Janssen (DE-396), World War II US Navy destroyer escort
- E. Janssen Building, a historic building in Eureka, California
See also
Topics referred to by the same term
This disambiguation page lists articles associated with the title Janssen.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: