Does Canada have Accessibility legislation?

No, but Ontario does.
The accessibility for Ontarians with disabilities act (AODA) was passed into thousand five. Its goal is to make Ontario accessible for people with disabilities by 2025. Ontario is one of the first jurisdictions in the world to move from complaint-based legislation to mandated accessibility with penalties for organizations that fail to implement the standards.

The AODA includes five accessibility standards that are being phased in until 2025:

1. Customer Service is about understanding that people with disabilities have different needs and taking steps to serve them.
2. Employment is about making accessibility a regular part of finding, hiring and supporting employees with disabilities.
3. Information and Communication is about helping people with disabilities access information and communications such as forms, documents and websites.
4. Transportation is about making it easier for I want to travel in Ontario.
5. Design of Public Spaces about making public faces more accessible.

The standards are rules that businesses and organizations in Ontario need to follow to identify, remove and prevent barriers so that people with disabilities have more opportunities to participate in everyday life.