A currach (Irish: curach [ˈkʊɾˠəx]) is a type of Irish boat with a wooden frame, over which animal skins or hides were once stretched, though now canvas is more usual. It is sometimes anglicised as "curragh".

The construction and design of the currach are unique to the west coasts of Ireland. It is referred to as a naomhóg [n̪ˠèːˈvoːɡ] in counties Cork, Waterford and Kerry and as a "canoe" in West Clare. It is similar to the Welsh coracle, though the two originated independently. The plank-built rowing boat found on the west coast of Connacht is also called a currach or curach adhmaid ("wooden currach"), and is built in a style very similar to its canvas-covered relative. Folk etymology has it that naomhóg means "little holy one", "little female saint", from naomh, Munster pronunciation [n̪ˠeːv] "saint, holy", and the feminine diminutive suffix -óg). Another explanation is that it comes from the Latin navis, and it has also been suggested that it derives from the Irish nae, a boat.

A larger version of this is known simply as a bád iomartha (rowing boat). It is suggested that the prototype of this wooden boat was built on Inishnee around 1900 and based upon a tender from a foreign vessel seen in Cleggan harbour. These wooden boats progressively supplanted the canvas currach as a workboat around the Connemara coast. This rowing currach measured up to 20 feet, and is still seen in water in North Donegal.

The currach has traditionally been both a sea boat and a vessel for inland waters. The River currach was especially well known for its shallow draft and manoeuvrability. Its framework was constructed of hazel rods and sally twigs, covered by a single ox-hide, which not only insulated the currach, but also helped dictate its shape. These currachs were common on the rivers of South Wales, and in Ireland were often referred to as Boyne currachs. However, when Ireland declared the netting of salmon and other freshwater fish illegal in 1948, it quickly fell out of use.