Vikram Singh Barn (born 2 August 1995), better known as Vikkstar or Vikkstar123, is an English DJ, YouTuber, and Internet personality. He is a co-founder and member of the British YouTube group known as the Sidemen.

Vikkstar began his music career by creating Minecraft parodies of popular songs. On 4 December 2022, Vik featured on the Sidemen''s Christmas single "Christmas Drillings", which peaked at number 3 on the UK Official Singles Chart. On 28 September 2023, Vik released his first single with Alan Walker and Dash Berlin titled "Better Off (Alone, Pt. III)", the song peaked at number 23 on the UK Official Singles Chart. On 1 December 2023, he released his debut solo single titled "Humans".