Alexander Leith

• Sir Alexander Leith
• Sir Alexander Leith, 1st Baronet, of Newcastle-upon-Tyne
• Sir Alexander Leith, 1st Baronet, of Burgh St Peter, British soldier and politician
• Alexander Forbes-Leith, 1st Baron Leith of Fyvie
• Sir Alexander William Wellesley Leith, 3rd Baronet, of the Leith-Buchanan baronets
• Sir Alexander Wellesley George Thomas Leith-Buchanan, 5th Baronet, of the Leith-Buchanan baronets