Irish dancing is a group of traditional dance forms originating from Ireland, encompassing both solo and group dancing. It developed in its current form, during the 18th and 19th centuries, from a variety of influences including French quadrilles and English country dancing. It was taught across Ireland by travelling dance masters, and new variations developed with regional influences. Irish dance gradually became part of Irish culture, particularly in Irish Nationalist communities.

Solo Irish dance includes the best-known form of Irish dance, generally known as Irish stepdance, which was popularized increasingly from 1994 onwards by shows such as Riverdance. Stepdance is characterized by a rigid upper body and the intricate footwork of its performers.

Group Irish dancing consists of a number of styles and traditions, which developed from French and English dances and formations. Ceili dancing is performed by groups of between two and sixteen people, and often uses traditional formations. Its footwork is essentially simple, and emphasis is placed on the figures and formations of the dances. Set dance is primarily a social tradition, for groups of four dancers, and includes elements of the intricate footwork found in step dance.