Do Canada passport holders need a visa to visit PR?

No visa and no ESTA. Puerto Rico is a U.S. territory, so a Canadian ordinary passport holder enters under U.S. immigration rules, visa-free, and can stay up to 6 months for tourism. Puerto Rico is an unincorporated territory of the United States, so there is no separate "Puerto Rico visa" — entry follows U.S. federal immigration law administered by U.S. Customs and Border Protection (CBP). Canadian citizens traveling on an ordinary Canadian passport are visa-exempt for short visits to the U.S. and, unlike most other nationalities, are also exempt from the ESTA / Visa Waiver Program requirement. For air travel a valid Canadian passport is required; by land or sea, WHTI-compliant documents (such as a passport, NEXUS card, or enhanced driver's license) are accepted. Canadians are typically admitted for up to 6 months as visitors for tourism or business. There is no separate customs/immigration checkpoint between the U.S. mainland and Puerto Rico, but international arrivals into Puerto Rico clear CBP on arrival. The traveler's passport must be valid for the duration of stay. This route is unaffected by the U.S. entry policy changes that took effect January 1, 2026, which do not apply to Canadian citizens (including dual citizens) traveling on a Canadian passport. Travelers should still carry proof of onward/return travel and confirm document rules with their airline before departure.