Nerys Evans was born in Llangain, near Carmarthen in 1980. Nerys completed studies at Manchester University and achieved a degree in Government and Political Theory. She also achieved a masters in Welsh Politics from Cardiff University.

She worked as a Political Officer for Plaid Cymru in the National Assembly,for nearly 4 years during the second Assembly term, and she was responsible for the Education and Lifelong Learning, Culture, Welsh Language and Sport and Constitution portfolios. Nerys has also worked as an Organiser for Plaid in Carmarthen East and Dinefwr and was also Press Officer for the Plaid Group on Carmarthenshire County Council.

Nerys' political interests include rural affairs, voter apathy, and the Welsh Language. She has also been an active representative and organiser for the PCS union.