
Acting · 19 years old
South Korea
Moon Seong-hyun is a South Korean actor born on June 2, 2006. He is known for playing the younger versions of male leads in several popular K-dramas, beginning his career in 2021. He is managed by FNC Entertainment. He first appeared in the 2021 dramas Vincenzo and Hometown Cha-Cha-Cha. He gained significant recognition for his role as the young Seo Yul in the fantasy drama Alchemy of Souls and as Prince Simso in the historical series Under the Queen's Umbrella. His emotional performance in the latter received high praise. In 2024, Moon took on his first starring role in the web drama The Chairman of Class 9.he was nominated for "Best Young Actor" at the 60th Baeksang Arts Awards and won "Best Young Actor" at KBS Drama Awards with Beauty and Mr. Romantic.

The King of Pigs
Kang-min (teen)

Alchemy of Souls
Seo Yul (teen)

Vincenzo
Jang Han Seok [Teen]

Queen of Tears
Baek Hyun-woo (teen)

Under the Queen's Umbrella
Prince Shimso

Hometown Cha-Cha-Cha
Hong Doo-shik (teenager)

Shooting Stars
Gong Tae-seong (teen)

Reborn Rich
Jin Seong-jun (young)

Trigger
Teenage Moon Baek

Hello, Me!
Chae Seong-U / Chae Chi-Su

The Chairman is Level 9
Na Yi-soo

Beauty and Mr. Romantic
Ko Pil-seung (teen)

The One and Only
Min Woo-Cheon (teen)

Stock Struck
Lim Ye Joon (teen)

Dr. Cheon and the Lost Talisman
Young Dr. Cheon

Fragment