Keiichiro Koyama

Keiichiro Koyama
小山 慶一郎
Also known asKei-chan (K-chan), Keii-chan, Koyamacchi
Born (1984-05-01) 1 May 1984
Sagamihara, Kanagawa, Japan
OriginTokyo, Japan
GenresJ-pop
Occupations
  • Singer
  • actor
InstrumentVocals
Years active2001–present
Member of
NEWS
Spouse
​
(m. 2024)​
WebsiteOfficial site
NEWS Starto Entertainment website
CHOIYAMA / 小山慶一郎
YouTube information
Channel
Years active2025–present
Subscribers63.5 thousand
Views4.89 million
Last updated: June 15, 2025

Keiichiro Koyama (小山 慶一郎, Koyama Keiichirō, born 1 May 1984) is a Japanese musician and leader of the Starto Entertainment group NEWS.

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