1. Avis: Avis operates car rental services at various Caribbean locations, including Barbados, Jamaica, Saint Martin, and the Dominican Republic.
2. Budget: Budget has car rental locations in several Caribbean destinations, including Aruba, Bahamas, Cayman Islands, and the Dominican Republic.
3. Hertz: Hertz offers car rental services in numerous Caribbean locations, including Barbados, Bermuda, Jamaica, Saint Lucia, and Turks and Caicos.
4. Enterprise: Enterprise Rent-A-Car operates in many Caribbean countries, including Barbados, Jamaica, Saint Lucia, and Trinidad and Tobago.
5. Dollar Rent-A-Car: Dollar has car rental locations in several Caribbean destinations, such as Antigua, Bahamas, Barbados, and Jamaica.
6. Thrifty Car Rental: Thrifty operates in various Caribbean locations, including Barbados, Cayman Islands, Jamaica, Saint Martin, and the Dominican Republic.
7. Sixt Rent-A-Car: Sixt offers car rental services in some Caribbean countries, including Jamaica and the Dominican Republic.
8. Local Rent-A-Car Companies: Aside from these international brands, there are also many local car rental companies operating in the Caribbean, providing alternatives to tourists and travelers.
When looking for a car rental in the Caribbean, it's advisable to compare prices, terms, and conditions, and read customer reviews to make an informed decision based on your specific requirements and budget. Additionally, remember to check whether any travel advisories or restrictions are in place for the Caribbean destination you plan to visit before booking your car rental.