A mòd is a festival of Scottish Gaelic song, arts and culture. Historically, the Gaelic word mòd (Scottish Gaelic: [mɔːt̪]), which came from Old Norse mót, refers to a Viking Age Thing or a similar kind of assembly. There are both local mòds, and an annual national mòd, the Royal National Mòd. Mòds are run under the auspices of An Comunn Gàidhealach. The term comes from a Gaelic word for a parliament or congress in common use during the Lordship of the Isles.
A mòd largely takes the form of formal competitions. Choral events (in Gaelic, both solo and choirs), and traditional music including fiddle, bagpipe and folk groups dominate. Spoken word events include children's and adult's poetry reading, storytelling and Bible reading, and categories such as Ancient Folk Tale or Humorous Monologue. Children can also present an original drama, and there are competitions in written Scottish Gaelic literature. Unlike the National Mòd, local mòds usually only last a day or two. They attract a much smaller crowd and the only notable social event is the winners' ceilidh. As there are fewer competitions than in the National Mòd, this ceilidh is often more like a traditional ceilidh with dancing and guest singers between the winners' performances.
Culturally, mòds are comparable to an Irish feis or the Seachtain na Gaeilge, or the Welsh eisteddfod.
In British Columbia, the Gaelic Society of Vancouver held a local Mòd biannually from 1990 to 2007.
The first US National Mòd was organized by Donald F. MacDonald, the founder of the Grandfather Mountain Highland games in North Carolina, and held at Alexandria, Virginia in 1988. The US National Mòd is now held as part of the annual Highland games at Ligonier, Pennsylvania and sponsored by An Comunn Gàidhealach Ameireaganach ("The American Scottish Gaelic Society").