Check with the Passport & Immigration Control Agency (PICA) for the visa requirement of Jamaica for the country you leave from.
Visit PICA online at: http://www.pica.gov.jm. There are countries where visa is required prior to arriving in Jamaica. On PICA website go to List of Countries Require Visa Prior to Arrival to view this list.
There are cases where visa is received on arrival (Countries that Receive Visa on Arrival); and where no visa is required (Unconditional Landing).