CARRICK-ON-SHANNON, a market and post-town in the county of Leitrim, Ireland, about 98 miles N.W. from Dublin. N. Lat. 53. 57., W. Long. 8. 5. It stands on the left bank of the Shannon, and contains an Established church, Roman Catholic chapel, county jail, court-house, infirmary, &c. Before the Union it returned two members to the Irish parliament. Its trade and industry are purely local. Pop. 1796.