Caltech Directory skip to main content Caltech Home > Directory Home Search the Directory Directory Caltech Directory Homepage Search the Directory: Example searches: "Smith", "Smi", "3500" Want a more specific search? Try the advanced search. Browse the Caltech Departmental Directory Search the JPL Personnel Directory (requires login) Unless otherwise specified, phone numbers in the Caltech Directory are of the form 626-395-####. JPL phone numbers are listed in their entirety. Emergency Information Telephone Instructions Auditorium Information Student Houses Information Campus/JPL Shuttle Information How to make changes to the Directory Who can access the Directory information Contacting Caltech By Mail: California Institute of Technology Pasadena, California 91125 Telephone: 626-395-6811 Fax: 626-795-1547 1200 East California Boulevard, Pasadena, CA 91125 Site content © 2026 California Institute of Technology