Tourism was worth €7.5bn to the country last year, up some €900m on 2014, according to figures released by Fáilte Ireland.
Preliminary figures for 2015 show that overseas tourist visits to Ireland grew by 13.1% to 8m, while short-haul markets in Britain and mainland Europe recorded respective growth of 11.3% and 15.7%.
Fáilte Ireland said that North America and other long-haul markets performed “very strongly”, increasing by 12.9% and 11.7%, respectively.
Britain remains the largest source market, representing 41.6% of all overseas tourists.
Domestic tourism was calculated as being worth €1.5bn to Ireland last year, with Irish holiday-goers taking 1.5m trips within Ireland last year.