Barr may refer to:

• Barr (placename element), element of place names meaning 'wooded hill', 'natural barrier'
• Barr, Ayrshire, a village in Scotland
• Barr Building (Washington, DC), listed on the US National Register of Historic Places
• Barr Castle, ruin in Renfrewshire, Scotland
• Barr Castle, in Galston, East Ayrshire, Scotland
• Barr, Bas-Rhin, a commune of the Bas-Rhin département in France
• Barr Township, Daviess County, Indiana, US
• Barr Township, Cambria County, Pennsylvania, US

• A.G. Barr, a Scottish soft drinks manufacturer
• Barr Construction Ltd, a Scottish construction company
• Barr Pharmaceuticals, a generic drug manufacturer that was acquired by Teva Pharmaceutical in 2008

• Barr (surname)
• Brendan Fowler, a.k.a. BARR, American musician
• Barr (tribe), a people in southwest Asia

• Barr body, the inactive chromosome in a somatic cell
• Al-Barr, one of the names of God in Islam

• Barre (disambiguation)
• Bar (disambiguation)
• All pages with titles beginning with Barr
• All pages with titles containing Barr