PhD Microbiology at University of Arizona

Programme overview

The Ph.D. program in Microbiology gives you the opportunity to perform cutting-edge research and prepares you for rewarding careers in areas such as academia, public health, government and regulatory agencies. As a Ph.D. student, you will enjoy flexibility in planning your program of study, which is tailored to your individual research interests and career goals. The Ph.D. degree requires a minimal number of formal graduate courses; the passing of traditional comprehensive written and oral exams;

Faculty: College of Agriculture, Life & Environmental Sciences | Duration: 6 years / 63 units | Study mode: full-time | Location: Tucson, AZ, United States

What you will study

The PhD degree is conferred on individuals who have demonstrated proficiency in research, experimental design, and scientific achievement in a microbiology discipline. The degree also requires two semesters of teaching as a graduate assistant. The degree is not granted merely as a certificate of faithful performance of a prescribed program of study and research.

Official programme page

Application information

Entry requirements

Graduate College minimum (applies to all programmes; departments may add requirements): regionally accredited bachelor's degree or comparable international degree and a minimum 3.00 GPA for degree programmes on a 4.00 scale. The Graduate College does not require the GRE, though individual programmes may. Programme-specific requirements are listed in the Graduate Admissions Guide.

Domestic applicants: USD 15,500 a year (2026-27). FY 2027 published base tuition for the Resident Graduate rate band, which applies to main-campus graduate programmes. Excludes mandatory fees, college fees, program fees and differential tuition, housing and meal plans. Source

International applicants: USD 35,800 a year (2026-27). FY 2027 published base tuition for the Non-Resident Graduate rate band, which applies to main-campus graduate programmes. Excludes mandatory fees, college fees, program fees and differential tuition, housing and meal plans. Source

Spring semester begins January 13 and fall semester begins August 23 for undergraduate international students; for graduate students spring begins January 14 and fall August 25.

Apply through the official page: https://grad.arizona.edu/admissions

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