Studying Medical Sciences in Ontario
You can’t always apply to medical sciences directly. Some universities admit you straight into it; others admit you into a broad first-year category and you choose medical sciences later. That difference is why searching for a major by name can make it look like a university doesn’t offer it.
Apply broad, choose medical sciences later
Queen's University
Apply to Life Science & Biochemistry (QL)
You choose medical sciences at Plan Selection after first year, when you choose a Life Sciences plan and sub-plan such as Biomedical Sciences.
Queen's does not use the name "Medical Sciences" — that is Western's program name, and searching it at Queen's returns nothing. The equivalent pre-med style degrees are Life Sciences (QL) and the Bachelor of Health Sciences (QH). Marked as non-direct because there is no Medical Sciences code to apply to: you enter QL and pick a plan plus sub-plan (Biomedical Sciences is the closest fit) after first year. QL requires English 4U, Calculus and Vectors 4U, Biology 4U and Chemistry 4U; QH requires Bio, Chem, English at 80% and one of the two maths.
https://healthsci.queensu.ca/liscbchm/life-sciences/degree-plansMcMaster University
Apply to Life Sciences Gateway
You choose medical sciences at the end of first year.
McMaster has no undergraduate program called Medical Sciences — that is a Western/Queen's name. The equivalent pre-med route here is the Life Sciences Gateway, or Honours Health Sciences if you can get in. Two things not to mistake for it: 'Medicine' on McMaster's site is the MD program, which you cannot enter from Grade 12, and Honours Medical Radiation Sciences is a specific imaging and radiation therapy degree, not a general medical science route.
https://future.mcmaster.ca/programs/lifesci/University of Toronto — St. George
Apply to Life Sciences (including Psychology)
You choose medical sciences at the end of first year.
U of T St. George has no Medical Sciences degree — that program page does not exist, unlike Western's BMSc. Students aiming at medicine apply to Life Sciences and then take Human Biology, Health and Disease, Physiology, Pharmacology or Immunology. The MD itself is applied to after a bachelor's degree.
https://future.utoronto.ca/program/human-biology/University of Toronto — Mississauga
Apply to Life Sciences
You choose medical sciences after first year (4.0 credits).
UTM has no 'Medical Sciences' program — that name belongs to Western's BMSc. Pre-med students at UTM apply to Life Sciences and typically take Biology for Health Sciences; medical school is a separate graduate-entry application after your degree.
https://www.utm.utoronto.ca/future-students/programs/biology-health-sciencesUniversity of Toronto — Scarborough
Apply to Life Sciences
You choose medical sciences end of first year, on ACORN.
No program at UTSC is called medical sciences. Pre-med students usually take Human Biology or Molecular Biology, Immunology and Disease under Life Sciences, often in the Health Sciences stream (TXD). Human Biology's specialist requires Grade 12 Calculus & Vectors and is limited-enrolment.
https://www.utsc.utoronto.ca/admissions/programs/human-biology
Apply straight to medical sciences
Western
You apply straight to Medical Sciences (ESM) from Grade 12, but understand what you are buying: ESM covers Years 1-2 only, and the Bachelor of Medical Sciences degree is a second-entry program you join in Year 3. ESM's advantage over Science (ES) is assured Year-3 BMSc entry if you finish Year-2 core courses with at least an 80% average and no mark below 60%; from ES you take the same courses but compete for Year-3 seats. Requires ENG4U, MCV4U, SBI4U and SCH4U; SPH4U recommended. Applying to both ES and ESM does not hurt your Medical Sciences chances — Western assesses each choice independently.
Waterloo
Two traps on this search term. First, Waterloo now has a literal "Medical Sciences (Waterloo) and Doctor of Medicine (St. George's University)" admission program starting September 2026 — two years at Waterloo then four at SGU in Grenada, and you apply through SGU first before being sent to OUAC, so it is not a normal Waterloo application at all. If you meant a regular Canadian undergrad science degree, the answer is Biomedical Sciences: direct entry, Faculty of Science, deliberately REGULAR ONLY with no co-op so you reach medical, pharmacy, optometry or dental school sooner. Advanced Functions and Calculus and Vectors plus two sciences, admission average low 80s. Second, do not confuse it with Biomedical Engineering, a co-op-only Engineering program with an entirely different application.
Read off each university’s own admissions pages, and covering the seven campuses Ontario students apply to most. Entry structures change — confirm with the university before you build a timetable around one. Search all programs.