星野 源是日本男性創作歌手、演員及作家，埼玉縣川口市出身，出生地則為埼玉縣蕨市。經紀公司分屬於Amuse、大人計畫。除個人的音樂事業之外，也身為器樂樂團SAKEROCK的團長，主要負責吉他與馬林巴的演出，也曾與山岸聖太、大原大次郎組成名為「山田一郎」的影像製作團體。

星野源，日本的演员、音乐家、作曲家、作词家。崎玉县蕨市出生(小学川口市)。自由的森林学园中学校 高级中学毕业。

作为4人组成的器乐曲乐队「SAKEROCK」的队长，主要担当吉他和木琴。

作为演员，大人计划事务所所属。

主要作品有电影《69~SIXTY NINE》、电视剧《秋叶原@DEEP》等。

身高168cm，体重61kg。血型AB型。

Gen Hoshino (星野 源, Hoshino Gen, born January 28, 1981) is a Japanese singer-songwriter, musician, actor, and writer.

Hoshino's movie debut, Lee Sang-il's 69, was an adaptation of the Ryū Murakami novel of the same name. He previously acted in various television dramas and stage plays. In 2012, he debuted as a voice actor, voicing Buddha in the original video animation (OVA) adaptation of Hikaru Nakamura's manga Saint Young Men, and also provided a theme song called "Gag" for its 2013 theatrical version, where he reprised his role. In 2013, he played the lead character in Masahide Ichii's Blindly in Love (箱入り息子の恋, Hakoiri Musuko no Koi) alongside Kaho, and starred in the Sion Sono film Why Don't You Play in Hell?. In 2016, Hoshino starred in TBS's The Full-Time Wife Escapist. With Yui Aragaki as his co-star, he portrayed a salaryman named Hiramasa Tsuzaki. The drama achieved steadily rising ratings, with a real-time viewership peak rating of 20.8% on the final episode, and an overall rating of 14.5%. Hoshino's performance earned him several Best Supporting Actor awards. He also provided the theme song for the drama, titled "Koi".

In 2017, Hoshino lent his voice to the main character of award-winning animated film Night Is Short, Walk On Girl. He also became the voice of the Father in Mamoru Hosoda's Mirai, which was released into theaters in Japan on July 20, 2018.

Idaten, NHK's 2019 Taiga drama, chosen for the theme to encourage the Tokyo 2020 Olympic Games, Hoshino portrayed Kazushige Hirasawa, who delivered the persuasive speech that helped determine the venue for the Tokyo 1964 Olympic Games.

On April 30, 2018, it was announced that Hoshino will star in Samurai Shifters, the film adaptation of Akihiro Dobashi's historical novel Hikkoshi Daimyo Sanzenri, set to premier on August 30, 2019. In the movie, he plays a bookworm samurai called Harunosuke Katagiri, who receives the mission to help a daimyo move. It will be Hoshino's first lead role in a live-action movie since Blindly in Love in 2013.