• Birthplace: Gangseo-gu, Seoul, South Korea
• Age: 33
• Height: 163
• Weight: 43
• Website: N/A

Kim Yong-sun or better known as Solar (솔라) is a singer and actress that is signed under Rainbow Bridge World. She is a leader and main vocalist of Mamamoo.

Solar was born in Gangseo-gu, Seoul, South Korea, where she lived with her parents and elder sister, Yong-hee. She graduated from Modern K Music Academy University.