Assuming you have a COPR/PR visa and are landing for the first time, No.
New entry requirement now in effect: visa-exempt foreign nationals need an Electronic Travel Authorization (eTA) to fly to or transit through Canada. Exceptions include U.S. citizens and travellers with a valid Canadian visa. Canadian citizens, including dual citizens, and Canadian permanent residents cannot apply for an eTA.
Quick addition to the previous message - you do NOT need to apply for an eTA if you are the citizen of a visa required country because your PR visa by itself satisfies entry conditions. However, you would still need an eTA if you are from a visa exempt country because you will only have the COPR but not a valid Canadian visa as you are, by definition, not required to have a visa to enter Canada. Assuming you have your COPR, I expect the eTA to be issued within hours if not earlier.