PhD Computer Science

The objective of the PhD in Computer Science is to produce outstanding computer scientists who are capable of conducting high-quality research with a deep understanding of their research domain. Our PhD will prepare graduates with the potential to make significant contributions to the academy and in the private sector.

The PhD in Computer Science is a full­-time, four-­year program (12 semesters) during which students will complete the Technical and Communication Research Methodology course (CIS*6890) and two additional graduate courses selected in consultation with their Advisory Committee. Students will also give two public seminars, pass a qualifying exam, conduct research and successfully defend a written PhD thesis at the final oral examination.

Applicants also have the option to apply for a collaborative specialization in One Health while pursuing a thesis-based PhD degree in Computer Science.

We strongly encourage all applicants to get in touch with prospective Graduate Faculty Supervisors prior to applying to the PhD in Computer Science program, as finding a SoCS supervisor is mandatory for admission. You can review SoCS Faculty Areas of Research to assist you in finding a suitable SoCS graduate faculty supervisor.

How to Apply

Please apply online at Applying to Guelph.

Application Deadlines

Available spaces in the PhD program fill quickly, so it is in your best interest to submit your application and all required supporting documentation early. Our application deadline dates for each semester of enrollment are as follows:*

  • Fall 2023: June 1, 2023
  • Winter 2024: October 1, 2023
  • Spring 2024: February 1, 2024

*The application deadlines are for both Domestic and International applicants. We encourage International applicants to apply a minimum of nine months in advance of these deadlines to ensure study permits can be processed in time for admission. Please see the Office of Graduate & Postdoctoral Studies Recommendations for International Applicants for suggested application timeline.

Please note: Application processing times may vary and take approximately two to three months for decision.


For more information and requirements, please visit the PhD in Computer Science Graduate Calendar, or download our Program Brochure.

Please note, we will not be able to pre-evaluate any documents, and must receive all the required documentation before your application can be evaluated. If you need further assistance, please contact our Graduate Program Assistant.