Main Cast:
* Goo Jun-pyo (Leader of F4): Lee Min-ho
* Geum Jan-di: Goo Hye-sun
* Yoon Ji-hoo: Kim Hyun-joong
* So Yi-jung: Kim Bum
* Song Woo-bin: Kim Joon
Supporting Cast:
* Min Seo-hyun: Kim So-eun
* Ga Eul: Kim Hee-won
* Chu Ga-eul: Park Ji-bin
* Lee Min-jung: Han Chae-young
* Kang Hee-soo: Lee Si-young
* Oh Min-ji: Kim Hyo-jin
* Joo Yoo-rin: Lee Min-jung
* Kang Jung-mi: Park Hyo-jun
* Jung Ji-soo: Kim Hyun-sung
* Song Yoo-ha: Lee Jeong-hak
* Oh Soo-suk: Kim Tae-yeon
* Goo Jun-pyo's Grandmother: Im Yeong-soon
* Goo Jun-pyo's Mother: Lee Hye-young
* Goo Jun-pyo's Father: Ahn Suk-hwan
* Geum Jan-di's Father: Jang Yong
* Geum Jan-di's Mother: Kim Hye-ok
Special Appearance:
* Kim Joon: Himself (as F4 member)
* Kim Hyun-joong: Himself (as F4 member)
* Kim Bum: Himself (as F4 member)
* Lee Min-ho: Himself (as F4 leader)
This list includes the main and supporting cast members who appeared in the Korean drama "Boys Over Flowers." The list might not be exhaustive, as there were many other minor characters who contributed to the plot.