Zak Arogundade Gaterud (born 23 October 1994), professionally known as Ecco2k (also stylised as Ecco2K and ECCO2K), is a recording artist and record producer. He was born in London, England, but moved to Sweden when he was two years old.

Ecco is a member of the musical collective Drain Gang, also known as Shield Gang or Gravity Boys and is closely affiliated with Yung Lean and Sad Boys. Even though he is definitive within the group, his style is mysterious, due to the limited number of tracks he has released.

His debut album E was released on November 27, 2019, after teasing it since 2014—an experimental set of songs executively produced by a close friend and longtime collaborator Gud.

He is a former designer for the Swedish label and cult footwear brand Eytys.