Johann MacDougall Lamont is a Scottish Labour Co-operative politician who served as Leader of the Scottish Labour Party from 2011 to 2014. She was previously a junior Scottish Executive minister from 2004 to 2007 and Deputy Leader of the Scottish Labour Party from 2008 until her election to the leadership in 2011. In addition to her ministerial and leadership roles, she has been a campaigner on equality issues and violence against women throughout her political career.

The office of Leader of the Scottish Labour Party was established when the Scottish Parliament was formed in 1999 and prior to its inaugural election. Until the Murphy and Boyack review in 2011, the office was Leader of the Labour Party in the Scottish Parliament and restricted to members of the Scottish Parliament. Since the review, the office has been opened up to all elected Scottish Labour politicians, including those involved in the Parliament of the United Kingdom and local government.