Yuki Koyama started to play the flute when he was six years old, his teacher was Megumi Horii.
1999 he won the 1st prize at the 53rd Student Music Competition of Japan Junior High School Division. 2002 he won the 1st prize at the 56rd Student Music Competition of Japan High School Division and the 1st prize at the 7th Biwako International Flute Competition High School Division. 2004 he won the 1st prize, Iwatani Award (Audience Award), Kato Award and Yoshida Award at the 73rd Music Competition of Japan. 2005 he won the 1st prize at the 6th Kobe International Flute Competition.
While he is busy giving recitals in various parts of Japan, he repeatedly works with orchestras such as the NHK Symphony Orchestra, New Japan Philharmonic, Japan Philharmonic Orchestra, Tokyo Philharmonic Orchestra, Tokyo Symphony Orchestra, Gunma Symphony Orchestra, Osaka Symphony Orchestra, Kobe City Chamber Orchestra and others.