Name	Known for
Joo Won Park Si-on Park Si-on See fewer	Bridal Mask (2012)
Moon Chae-won Cha Yoon-seo Cha Yoon-seo See fewer	War of the Arrows (2011)
Joo Sang-uk Kim Do-han Kim Do-han See fewer	Giant (2010)
Kim Min-seo Yoo Chae-gyeong Yoo Chae-gyeong See fewer	Sungkyunkwan Scandal (2010)
Chun Ho-jin Choi Woo-seok Choi Woo-seok See fewer	I Saw the Devil (2010)
Kwak Do-won Kang Hyeon-tae Kang Hyeon-tae See fewer	The Wailing (2016)
Kim Chang-wan Chairman Jeong Chairman Jeong See fewer	My Love from Another Star (2013)
Oh Eun-chan Cha Dong-jin Cha Dong-jin See fewer	Iris (2009)
Jo Hie-bong Ko Chung-man Ko Chung-man See fewer	Blind (2011)
Jeong Ho-geun Park Choon-Sung (as Ho-geun Jeong) Park Choon-Sung (as Ho-geun Jeong) See fewer	Good Doctor (2013)
Seo Hyun-chul Byung-soo Byung-soo See fewer	Good Doctor (2013)
Uhm Hyun-kyung Na In-yeong Na In-yeong See fewer	Second Husband (2021)
Wang Ji-won Kim Sun-Joo (as Ji-won Wang) Kim Sun-Joo (as Ji-won Wang) See fewer	Still 17 (2018)
Lee Ki-yeol Lee Hyuk-Pil (as Ki-yeol Lee) Lee Hyuk-Pil (as Ki-yeol Lee) See fewer	Sweet Spy (2005)
Jin Kyung Nam Joo-Yeon Nam Joo-Yeon See fewer	Veteran (2015)
Jeong Man-sik Kim Jae-jun Kim Jae-jun See fewer	Miracle in Cell No. 7 (2013)
Ban Min-jung Kyu-hyun's mother Kyu-hyun's mother See fewer	Charari Jukyeo (2025)
Lee Won-jae Anesthesiologist Anesthesiologist See fewer	The Chaser (2008)
Yun Yoo-sun Oh Kyung-joo Oh Kyung-joo See fewer	The Story of Two Women (1994)
Bong-gil Yoon Hong Kil Nam (2013) Hong Kil Nam (2013) See fewer	Good Doctor (2013)
Na Young-hee Lee Yeo-Won Lee Yeo-Won See fewer	Forgotten (2017)
Kim Young-kwang Han Jin-uk Han Jin-uk See fewer	On Your Wedding Day (2018)