Sarah Herriot Boyack is a Scottish Labour politician who has served as a Member of the Scottish Parliament (MSP) for the Lothian region since 2019, and previously from 2011 to 2016. She formerly represented the Edinburgh Central constituency from 1999 to 2011.

Scottish Labour, officially the Scottish Labour Party, is the part of the UK Labour Party active in Scotland. Ideologically social democratic and unionist, it holds 22 of 129 seats in the Scottish Parliament and 2 of 59 Scottish seats in the House of Commons. It is represented by 262 of the 1,227 local councillors across Scotland. The Scottish Labour party has no separate Chief Whip at Westminster.