Greenore is a small town, townland and deep water port on Carlingford Lough in County Louth, Ireland. The population of Greenore and the surrounding rural area (electoral area) was 898 in the 2002 Irish census.
Greenore has the only privately owned port in Ireland. It has three berths and can handle vessels of up to 39,999 gross tons. In 1964 the port was used to fit out the ships used for the pirate radio stations Radio Caroline and Radio Atlanta (later Radio Caroline South). In the 1970s there was regular freight shipping from the port to Bristol. In 2005 Greenore was Irelands's 10th largest port in terms of tonnage handled with 649,000 tonnes of goods handled.