Do I need to hold an MS degree to be eligible to apply?

A Master’s degree is only required if you do not meet the following eligibility requirements.  To be eligible for admission to graduate programs at Stanford, applicants must meet one of the following conditions:

• Applicants must hold, or expect to hold before enrollment at Stanford, a bachelor’s degree from a U.S. college or university accredited by a regional accrediting association.
• Applicants from institutions outside the U.S. must hold, or expect to hold before enrollment at Stanford, the equivalent of a U.S. bachelor’s degree from a college or university of recognized standing. See the Office of Graduate Admissions for the minimum level of study required of international applicants.