Studying Microbiology in Ontario
You can’t always apply to microbiology directly. Some universities admit you straight into it; others admit you into a broad first-year category and you choose microbiology 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 microbiology later
Apply to Medical Sciences (ESM)
You choose microbiology at the end of Year 2 — you enter the BMSc program and its module in Year 3.
Microbiology and Immunology (and Microbiology and Immunology with Pathology) are BMSc modules entered in Year 3. Years 1 and 2 in Medical Sciences are the same for everyone; ESM buys you assured Year-3 entry at 80% in Year-2 core courses with nothing below 60%, rather than competing from the general pool. Requires ENG4U, MCV4U, SBI4U and SCH4U; SPH4U recommended.
https://welcome.uwo.ca/what-can-i-study/undergraduate-programs/medical-sciences.htmlApply to Life Sciences Gateway
You choose microbiology at the end of first year.
There is no undergraduate program named Microbiology at McMaster — the Department of Biology lists it only as a research area, not a degree. The closest degrees are Honours Molecular Biology & Genetics (Core, Research Specialization, or Research Specialization Co-op), with Honours Biology and Honours Biochemistry as the other realistic destinations. All are Level 2 programs off the Life Sciences Gateway.
https://future.mcmaster.ca/programs/lifesci/University of Toronto — St. George
Apply to Life Sciences (including Psychology)
You choose microbiology at the end of first year.
There is no program called just Microbiology — searching that term returns nothing. It is Molecular Genetics and Microbiology, offered as Major or Specialist and entered from Life Sciences after first year. SBI4U, SCH4U and MCV4U required.
https://future.utoronto.ca/program/molecular-genetics-and-microbiology/University of Toronto — Mississauga
Apply to Life Sciences
You choose microbiology after first year (4.0 credits).
There is no standalone Microbiology program at UTM. The closest routes are Molecular Biology or Biology, both requested after first year inside Life Sciences.
https://www.utm.utoronto.ca/future-students/programs/molecular-biologyUniversity of Toronto — Scarborough
Apply to Life Sciences
You choose microbiology end of first year, on ACORN.
There is no program literally called microbiology. The closest are Molecular Biology, Immunology and Disease and Molecular Biology & Biotechnology, both declared later inside Life Sciences (TSL). Either way the OUAC application is TSL (or TXD for the Health Sciences stream).
https://www.utsc.utoronto.ca/admissions/programs/molecular-biology-immunology-diseaseApply to Life Sciences
You choose microbiology you name Biology as your major when you apply to Life Sciences; the Microbiology option is added after first year.
There is no standalone Microbiology major or admission program. Microbiology is an option — roughly eight courses added onto a Science major, started after first year. You apply to Life Sciences, major in Biology, then add the option.
https://uwaterloo.ca/science/undergraduate/programs/minors-options-and-specializationsApply to Bachelor of Science (BSc) Honours (GZ)
You choose microbiology on the OUAC application itself. Guelph's Honours BSc majors all share code GZ, and you name your major when you apply. First year is common across the majors, so Guelph says switching afterwards is straightforward.
The major is called Microbiology and Immunology, a BSc under GZ. Guelph's Honours BSc is one OUAC code (GZ) covering 27 majors, published at 80-85% for all of them except Neuroscience (81-86%) and Animal Biology and Bio-Medical Science (85-91%, and those two have their own codes, GZA and GZB). You choose the major on the application, not after first year.
https://bsc.uoguelph.ca/links/faqApply to not offered at Carleton University
Carleton has no microbiology major — nothing by that name appears in its full A-Z listing. Biology (BSc), Biochemistry and Biotechnology under the Science code CT are the nearest routes.
https://admissions.carleton.ca/cu-programs/Wilfrid Laurier University — Waterloo
Apply to not offered at Laurier
Laurier has no microbiology major. Biology (UZF) and Biochemistry and Biotechnology (UBI) are the nearest, both direct entry at mid-70s.
https://www.wlu.ca/programs/index.htmlApply to not offered at York
York has no microbiology major — nothing by that name appears among its 111 programmes. Biology (YSB), Biotechnology (YSA) and Biomedical Science (YSW) are the nearest, all direct entry at low-to-mid 80s.
https://futurestudents.yorku.ca/program-searchApply to not offered at Brock
Brock has no microbiology major — nothing by that name appears among its 86 codes. Biological Sciences (BS), Biotechnology (BIT) and Biochemistry (BCH) are the nearest, all direct entry at mid-70s.
https://brocku.ca/programs/undergraduate/Toronto Metropolitan University
Apply to not offered at TMU
TMU has no microbiology major. Biology (SBX) and Biomedical Sciences (SBS) are the nearest, both direct entry.
https://www.torontomu.ca/programs/undergraduate/Apply to not offered at Windsor
Windsor has no microbiology major. Biology (NSB), Biochemistry (NSY) and Biomedical Sciences (NSD) are the nearest, all direct entry.
https://www.future.uwindsor.ca/programs/Apply to not offered at Ontario Tech
Ontario Tech has no microbiology major. Biological Science (DSB) and Applied Biotechnology (DSF) are the nearest, both direct entry.
https://ontariotechu.ca/programs/undergraduate/index.phpApply to not offered at Trent
Trent has no microbiology major. Biology (RBI) and Biochemistry and Molecular Biology (RBM) are the nearest, both direct entry at 70%.
https://www.trentu.ca/futurestudents/programsApply to not offered at Lakehead
Lakehead has no microbiology major. Biology (AD) and Applied Life Sciences (AA) are the nearest.
https://www.lakeheadu.ca/programs/undergraduate-programsApply to not offered at Laurentian
Laurentian has no microbiology major. Biomedical Biology (LBW) and Biochemistry (LBC) are the nearest, both direct entry at 70%.
https://laurentian.ca/undergraduate-programsApply to not offered at Nipissing
Nipissing has no microbiology major. Biology, inside the Bachelor of Science (PS), is the nearest.
https://future.nipissingu.ca/programs/Apply to not offered at Algoma
Algoma has no microbiology programme. Biology (JGA) is the only life science.
https://algomau.ca/academics/programs/Apply to not offered at Trent Durham
Not offered at either Trent campus.
https://www.trentu.ca/durham/
Apply straight to microbiology
Life Sciences and Biochemistry (QL)
Don't search OUAC for a "Microbiology" code — there isn't one. Queen's undergraduate Microbiology and Immunology only exists as a graduate department name; the university's own calendar states admission to the old grad program "Microbiology and Immunology" stopped in 2014 and it folded into Biomedical and Molecular Sciences. For a 17-year-old wanting microbiology, the real Grade 12 route is QL (Life Sciences and Biochemistry), entering as one cohort in first year, splitting into the Life Sciences plan in spring, and later choosing the Biomedical Discovery sub-plan (which explicitly lists Microbiology as an option) once in the Specialization plan — access to some 4th-year specialized courses also requires keeping a cumulative GPA of 2.50.
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.