Giriboy
Background information
Birth name	Hong Si-young
Born	(1991-01-24) January 24, 1991 (age 33) Seoul, South Korea
Genres	Korean hip hop
Occupations	Rapper singer songwriter record producer actor
Years active	2011–present
Labels	Standard Friends
Korean name
Hangul	홍시영
Revised Romanization	Hong Si-yeong
McCune–Reischauer	Hong Siyŏng

Hong Si-young (Korean: 홍시영; born January 24, 1991),^[1] better known by his stage name Giriboy (Korean: 기리보이), is a South Korean rapper and singer signed to the Standard Friends label.^[2]

Giriboy began his musical career in 2011 with the single "You Look So Good to Me", released under Just Music, a label that had been recently founded by rapper Swings. The following year, he released the EP Fatal Album, much of which he had written years earlier as a high school student. He released a second EP titled Fatal Album II later that year.^[3]

Giriboy competed on season three of the TV show Show Me the Money in 2014.^[4] That year, he also entered the top 100 of the Gaon Digital Chart for the first time with the single "Fluttering Feelings", a collaboration with singer NS Yoon-G. The song ultimately peaked at No. 6 on the chart.^[5][6]

In 2015, he appeared on the reality show No Mercy, in which he collaborated on songs with the contestants (who would go on to form the boy group Monsta X) and with established artists Soyou and Mad Clown.^[7][8] He also released the album Sexual Perceptions, which reached No. 10 on the Gaon Album Chart in March.^[9]

In 2016, he released his fourth album, Mechanical Album. In 2017, he released his fifth EP, called 5 Songs For Initiation.^[2] In December of the same year, he released his fifth album, Graduation.^{[citation needed]}

In 2024, Giriboy signed to South Korean label Standard Friends founded by artist Zion.T