A Temporary Resident Visa is also known as a visitor visa.
The main determining factor as to whether you require a Temporary Resident Visa before travelling to Canada, is nationality. If you are a citizen of a country that Canada has exempted from the Temporary Resident Visa requirement (known as a “visa-exempt” country), you must instead obtain an electronic Travel Authorization (eTA) before travelling to Canada by air (if travelling over land, visa-exempt individuals may obtain approval to enter Canada on a temporary basis at the Canadian border).
Who Needs a Temporary Resident Permit
Anyone who is inadmissible to Canada but has a valid need to come to the country needs a TRP. TRPs can cover either medical or criminal inadmissibility. If you are inadmissible to Canada because of a criminal conviction and you completed your sentence less than five years ago, a Temporary Resident Permit might be your best option if you need to travel to Canada. If a person is deemed inadmissible to Canada, their family members travelling with them may also be considered inadmissible. Those family members will need to apply for, and be granted, their own individual TRPs before a border officer will let them enter Canada. When a person receives a TRP and is in Canada, they must adhere to certain conditions in order to remain in the country.