Archibald Barr LLD, FRS[1] FRSE (18 November 1855, Glenfield House, Paisley, Renfrewshire – 5 August 1931) was a Scottish scientific engineer, inventor and businessman.
In 1884 he was appointed to the chair of Civil and Mechanical Engineering at the Yorkshire College (which became the University of Leeds in 1904).
He also helped to form the Scottish Aeronautical Club in 1909, becoming its president, and was a promoter of Scotland's first aviation meeting, held at Lanark in 1910.
Barr was also a governor of the Royal Scottish National Institution for the care of those with learning difficulties.
Barr was awarded the honorary degree of Doctor of Laws (LLD) by Glasgow upon his retirement in 1915.