Jansen

Jansen may refer to:

• Jansen (surname), a Dutch surname, cognate of Johnson

• Jansen, Saskatchewan, Canada
• Jansen, Colorado, United States
• Jansen, Nebraska, United States

• Jansen AG, Swiss steel and plastic company, founded by Josef Jansen of Aachen
• Jansen (crater), lunar crater named after Dutch inventor of the telescope Sacharias Jansen
• Jansen's metaphyseal chondrodysplasia, rare disease discovered by the orthopedic surgeon Murk Jansen
• Jansenism, Catholic theological movement named after the Dutch theologian Cornelius Jansen

• Janse, Dutch surname
• Janson (disambiguation), Scandinavian surname
• Janssen (disambiguation), Dutch surname
• Janssens, Dutch surname

This disambiguation page lists articles associated with the title Jansen.
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