Alexander Campbell is one of the most prevalent personal names in Scotland and among Scottish emigrant populations. For this reason there are a number of famous people of that name including:

• Alexander Campbell (Restoration movement), Early leader (sometimes called "co-founder") of the Disciples of Christ
• Sir Alexander Campbell (Canadian politician), one of the fathers of Confederation
• Alexander Campbell (shipbuilder), a Canadian shipbuilder and office holder.
• Alexander Campbell (American politician), Senator from Ohio in early 19th century
• Alexander B. Campbell, Premier of Prince Edward Island from 1966 to 1978
• Alexander Campbell (Upper Canada politician), member of the 1st Parliament of Upper Canada