A sliotar (or sliothar) is a hard solid sphere slightly larger than a tennis ball, consisting of a cork core covered by two pieces of leather stitched together. Sometimes called a "puck" or "hurling ball", it resembles an American baseball with more pronounced stitching. It is used in the Gaelic games of hurling, camogie, rounders and shinty.
Early sliotars used various materials, depending on the part of the country:
- hollow bronze
- wood and leather
- wood, rope and animal hair.