John Lowther may refer to:
Sir John Lowther of Lowther Hall (died 1637), Member of Parliament for Westmorland (UK Parliament constituency) Sir John Lowther, 1st Baronet, of Lowther (1605–1675), Member of Parliament for Westmorland 1660–1661 John Lowther (d. 1668) (c. 1628 – 1668), Member of Parliament for Appleby 1661–1668 Sir John Lowther, 2nd Baronet, of Whitehaven (1643–1706), Member of Parliament for Cumberland 1665–1701 John Lowther, 1st Viscount Lonsdale (1655–1700), Member of Parliament for Westmorland 1677–1679 and 1681–1696 John Lowther (d. 1729), Member of Parliament for Pontefract 1722–1729 Sir John Lowther, 1st Baronet, of Swillington (1759–1844), Member of Parliament for Carlisle, Cockermouth, Cumberland, and Haslemere Sir John Lowther, 2nd Baronet, of Swillington (1793–1868), Member of Parliament for Cockermouth, Wigtown, and York John Luke Lowther, (1923–2011), soldier, politician and Lord Lieutenant of Northamptonshire