- September 8 – Samvastsari Parva (Jainism)*
- September 16 – Mawlid al Nabi (Islam)*
- September 19 – Ganesh Chaturthi (Hinduism)*
- September 19 – Powley Day Ontario (Métis Nation of Ontario; Métis communities across Canada)
- September 30 – National Day for Truth and Reconciliation (Indigenous Peoples across Canada; observance across Canada)