Mhairi Black
- Born
- 12 September 1994 (31 years)
- Place of birth
- Paisley, Scotland, UK
- Gender
- Female
Mhairi Black MP is a Scottish National Party politician, serving as the party's deputy leader in the House of Commons since December 2022. She has been a Member of Parliament for Paisley and Renfrewshire South since 2015, when she defeated Labour's Shadow Foreign Secretary Douglas Alexander.