Janssen may refer to:

Astronomy

Janssen (lunar crater) Janssen is an ancient impact crater located in the highland region near the southeastern lunar limb. The entire structure has been heavily worn and is marked by many lesser crater impacts. The outer wall is breached in multiple locations, but ...

* 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 Janssen Pharmaceuticals is a pharmaceutical company headquartered in Beerse, Belgium, and wholly-owned by Johnson & Johnson. It was founded in 1953 by Paul Janssen. In 1961, Janssen Pharmaceuticals was purchased by New Jersey-based American c ...

, American biotechnology company *

Janssen COVID-19 vaccine The Janssen COVID19 vaccine, sold under the brand name Jcovden, is a COVID19 vaccine that was developed by Janssen Vaccines in Leiden, Netherlands, and its Belgian parent company Janssen Pharmaceuticals, a subsidiary of American company John ...

, a COVID-19 vaccine *

Janssen Pharmaceuticals Janssen Pharmaceuticals is a pharmaceutical company headquartered in Beerse, Belgium, and wholly-owned by Johnson & Johnson. It was founded in 1953 by Paul Janssen. In 1961, Janssen Pharmaceuticals was purchased by New Jersey-based American c ...

, a Belgian company * , World War II US Navy destroyer escort *

E. Janssen Building The E. Janssen Building at 422 First Street, Eureka, California, is a two-story Italianate commercial building. It was built in 1875 to be a hardware and general merchandise store. In 1973, it was the first building in Eureka to be placed on the ...

, a historic building in Eureka, California

Astronomy

Other

See also