Holly Lester is an electronic dance music disc jockey from County Armagh, Northern Ireland.

Lester is co-founder of the Free The Night advocacy organisation aimed at boosting the night-time economy in Northern Ireland.

[1] She first came to prominence working as a disc jockey in dance venues in the north-west of England, has been a regular "homegrown" performer at the AVA Festival in Belfast, and was in the top 50 of the Guardians pick of the best new music for 2019.

[9][10] Her sound has been described by Resident Advisor as "raw analogue jams" that "rub shoulders with dreamy trance tinged melodies and swirling breakbeats".

[2] Lester set up the Duality Trax record label in 2020, which has released music for artists including Abdul Raeva and Tifra.