Kristian Humaidan (born 1981, Svendborg, Denmark), better known by his stage name UFO, is a Danish singer, rapper and hip hop artist. He was part of the rap duo UFO Yepha before splitting-up and going solo. With the split, UFO is noticeably branching into Danish music rather than hip hop as in the days with Yepha.

This biography of a living person needs additional citations for verification. (March 2012)

Kristian Humaidan (known as UFO) won the freestyle championship MC's Fight Night in 2002. Soon he started collaborating as a duo with Jeppe Bruun Wahlstrøm (known as Yepha, born 1983)^[1] through Svendborg, and later from Aarhus. They were also known as Whyyou (taking lead from first letters of their names). They had a good number of chart successes before they split-up as a duo in 2011.

They had three albums charting on the official Danish Albums Chart as follows:

• U vs. Y (2003 – reached #28)
• Ingen som os (2006 – reached #20)
• Kig mig i øjnene (2008 – reached #32)

They released many singles as UFO and Yepha including charting singles:

• "Hver dag" (2003, reached #1)
• "Næh næh" (Ufo Yepha feat. Anna David) (2008 – reached #20)
• "Stille og roligt knald pa" (2009, reached #27)

UFO's debut album as a solo artist is Humaidan. It was released by Universal Music Denmark on 24 October 2011.