Janssen Formation

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 Pharmaceuticals, a Belgian company
** Janssen Biotech, an American subsidiary
** Janssen COVID-19 vaccine
* , World War II US Navy destroyer escort
* E. Janssen Building, a historic building in Eureka, California

See also

* Jansen (disambiguation)
* Janssens
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