Emma Louise Blackery (born 11 November 1991) is an English singer-songwriter, YouTuber and author. Active since 2012, Blackery has garnered over a million subscribers on her YouTube channel and released two studio albums and six EPs. She has toured with Busted, and headlined tours for her debut studio album Villains, released on her RWG Records label in 2018.

In 2015, Blackery's main YouTube channel had over one million subscribers. She performed and was a panelist at YouTube events (including Summer in the City and VidCon), and has contributed twice to the YouTube Rewind video series. Blackery's book, Feel Good 101: The Outsiders' Guide to a Happier Life, is based on her 2013 Feel Good 101 video series.