The Glasgow Argus was a Scottish newspaper, published biweekly from 1833 to 1847. It took a reforming editorial line, supporting abolitionism and opposing the Corn Laws. The Argus was perceived as the paper of the supporters of the Glasgow merchant and politician James Oswald. The first editor, William Weir, not only made the Argus the recognised organ of the "clique", as Oswald's Whig and Liberal supporters were known, but pursued a radical editorial line of his own. Eventually in 1839 he was sacked for his radical stance on free trade, incompatible with the Whig views of the proprietors; Weir wished Whig parliamentary candidates to pledge immediate repeal of the Corn Laws.
At the time of the United Kingdom general election, 1847, Charles Mackay disagreed with the paper's management on the choice of local Liberal candidate, and left the position of editor.