Ruben Markussen (born 23 March 1995), known mononymously as Ruben, is a Norwegian singer and songwriter. He grew up in Bjarkøy, a small village of 300 inhabitants in Harstad, northern Norway. His debut single "Walls" charted in Norway on the basis of huge streaming online charting on VG-lista, the official Norwegian Singles Chart, making it to number 8. As a result, he moved to Oslo to further his career. He was nominated for the Norwegian P3 Gold 2018 award in 2018 "Newcomer" category for the song during Spellemannprisen, receiving a scholarship. His follow up "Lay by Me" has charted in Norway, reaching number 8. Both singles also charted in Sweden. He is signed to Universal Records in Norway.