John La Touche (April 1775 – 30 January 1820) was an Irish Whig politician.
He was the son of John La Touche (1732-1810), who had represented Newcastle, Newtownards, Harristown and Kildare in the Parliament of Ireland and subsequently sat for Kildare from 1801 to 1802 in the new Parliament of the United Kingdom.
John La Touche junior represented Newtownards in the Irish House of Commons from 1796 to 1797. Elected in 1798 for both Newcastle and Harristown he chose to sit for Harristown until the Act of Union in 1800/01.
He then represented Dublin City 1802-1806 and Leitrim 1807-1820 . In the UK General Election of 1802 La Touche defeated Tory MP the Right Honourable George Ogle. He was himself defeated in the UK General Election of 1806.
He was appointed Sheriff of Leitrim for 1808-09.