John Craig FGS (1796–1880) was a Scottish geologist and lexicographer.
[1] Born at Airdrie, North Lanarkshire, the son of a merchant, Craig had only six months in a local school and began life as a weaver.
Self-taught, he later kept a school at Shotts and another at Echo Bank, Newington, and began to write and publish poetry.
From this, he gained work for the Glasgow Town Council making surveys of public and private property and began to give lectures on geology and to write geological treatises.
[2] The new Craig's Universal dictionary was issued in two volumes of 1,000 pages each, and also in monthly parts.