Canadian Gaelic or Cape Breton Gaelic (Gàidhlig Chanada, A' Ghàidhlig Chanadach or Gàidhlig Cheap Bhreatainn), often known in Canadian English simply as Gaelic, is a collective term for the dialects of Scottish Gaelic spoken in Atlantic Canada.
Scottish Gaels were settled in Nova Scotia from 1773, with the arrival of the ship Hector and continuing until the 1850s. Gaelic has been spoken since then in Nova Scotia on Cape Breton Island and on the northeastern mainland of the province. Scottish Gaelic is a member of the Goidelic branch of the Celtic languages and the Canadian dialectics have their origins in the Highlands and Islands of Scotland. The parent language developed out of Middle Irish and is closely related to modern Irish. The Canadian branch is a close cousin of the Irish language in Newfoundland. At its peak in the mid-19th century, there were as many as 200,000 speakers of Scottish Gaelic and Newfoundland Irish together, making it the third-most-spoken European language in Canada after English and French.
In Atlantic Canada today, there are approximately 2,000 speakers, mainly in Nova Scotia. In terms of the total number of speakers in the 2011 census, there were 7,195 total speakers of "Gaelic languages" in Canada, with 1,365 in Nova Scotia and Prince Edward Island where the responses mainly refer to Scottish Gaelic. The 2016 census also reported that 240 residents of Nova Scotia and 15 on Prince Edward Island considered Scottish Gaelic to be their "mother tongue".
While there have been many distinctive Canadian dialects of Scottish Gaelic that have been spoken in other Gàidhealtachd communities, particularly in Glengarry County, Ontario and the Eastern Townships of Quebec, Atlantic Canada is the only area in North America where Scottish Gaelic continues to be spoken as a community language, especially in Cape Breton. Even there the use of the language is precarious and its survival is being fought for.