George Lang (1821 – 2 July 1881) was a Scottish stonemason and master builder who built many buildings in Halifax, Nova Scotia during the 19th century.

[2] In the previous year, Halifax passed a law banning the construction of large wooden buildings after a fire ravaged Hollis Street.

[4] Lang's first major project, the Halifax County Court House, was designed by William Thomas's Toronto-based architectural firm, and built from 1858 to 1860.

[10] Contractors were typically responsible for financing their projects, sourcing supplies and labor, and completing construction within strict deadlines, often with penalty clauses for delays.

[13] Sustained by numerous commissions and supported by creditor James Forman Jr., Lang managed a workforce, a masons' workshop, carpentry practice, a slate quarry, and a steam engine by the mid-1860s.

Unable to meet the contract terms due to financial difficulties, Lang was replaced by John Brookfield in 1866, who completed the construction of the incomplete building by 1869.