The Long Grazing Acre is a collaborative album released by uilleann piper Paddy Keenan and guitarist/singer Tommy O'Sullivan in 2001, featuring a combination of traditional, original, and covered folk songs and instrumental tunes within the Irish Traditional Music idiom.

A number of the tunes on this album were written by Keenan for the soundtrack of the 1997 film Traveller, including "The Pavee Jig", "Antara" and "The Twirly haired Girl", though they were not used in the score.

[1] Rick Anderson of AllMusic praised Keenan's "dazzling showcase of jaw-dropping technical prowess" and expressiveness, as well as O'Sullivan's generally "fine vocal performances", qualified only by a mention that his rendition of "Stranger to Himself" might have been "too bland.

[3] Philippe Varlet also expresses disappointment with the album's modern direction and music selection, but praises the performers' technical abilities, awarding only three out of five stars.

[4] This album is the first recording on which Keenan plays a new set of pipes which he commissioned from the late maker Dave Williams of Grimsby, England, and received in 2000.