Irish whiskey (Irish: Fuisce or uisce beatha) is whiskey made in Ireland.

Key regulations defining Irish whiskey and its production are established by the Irish Whiskey Act of 1980, and are relatively simple (for example, in contrast with those for Scotch and Bourbon whiskey). They can be summarised as follows:

There are several types of whiskey common to Ireland, including those referred to as "single pot still",single malt, single grain, and blended Irish whiskey. But in contrast to the Scotch Whisky Regulations of 2009, the Irish Whiskey Act of 1980 does not actually contain a definition of the terms "single malt Irish whiskey" or "single grain Irish whiskey" or specific rules governing their production, so the exact definitions of these terms may not be clearly established. The meaning of such terms can vary substantially from producer to producer. For example, some Scottish whisky that could have been considered "single malt" before 2009 was distilled using continuous stills, and there is an American whiskey marketed as a "Single Malt" that is made from rye grain. Both of these practices would violate the 2009 Scotch Whisky Regulations definition of "Single Malt Scotch Whisky" but may not be prohibited for "Single Malt Irish Whiskey".