Alexander Campbell is one of the most prevalent personal names in Scotland and among Scottish emigrant populations.

Sir Alexander Campbell, PC, KCMG, QC (March 9, 1822 – 24 May, 1892) was an English-born, Canadian statesman and politician, and a father of Canadian Confederation.

Alexander Campbell (September 12, 1788 – March 4, 1866) was an early leader of a movement that began in 1800 with the goal of removing divisions between Christians, by returning believers in the New Testament to principles of "Truth and Union." This movement has since been called the Restoration Movement or the Stone-Campbell Movement.