Nichola Mallon (born 23 August 1979) is a former politician from Northern Ireland who served as Deputy Leader of the Social Democratic and Labour Party (SDLP) from 2017 to 2022.

She read Economics and Politics at Trinity College Dublin and graduated with a BA (Hons), followed by an MA in Comparative Ethnic Conflict from Queen's University Belfast.

[2] In 2010 she was co-opted by the SDLP onto Belfast City Council to replace Alban Maginness in the Oldpark (District Electoral Area).

In 2013, she was appointed a special adviser to the SDLP's Environment Minister Mark H. Durkan, but stood down from that position when elected Lord Mayor of Belfast in 2014.

[4] She was elected a Member of the Northern Ireland Assembly for Belfast North in 2016 and re-elected in 2017, increasing the SDLP vote to 5,431 first preferences.