Cast of "The Heirs"
Characters:
Main characters:
- Lee Min-ho as Kim Tan
- Jung Chan-woo as young Kim Tan (middle school student)
- Park Shin-hye as Cha Eun-sang
- Kim Woo-bin as Choi Young-do
- Yang Hyun-mo as young Young-do (middle school student)
- Kang Min-hyuk as Yoon Chan-young
- Krystal Jung as Lee Bo-na
- Kim Ji-won as Rachel Yoo
- Choi Jin-hyuk as Kim Won
- Kang Ha-neul as Lee Hyo-shin
- Park Hyung-sik as Jo Myung-soo
Additional Cast Members:
- Jeong Dong-Hwan - Kim Nam-Yoon
- Choi Won-Young - Yoon Jae-Ho
- Park Jun-Keum - Jung Ji-Sook
- Yun Son-Ha - Esther Lee
- Kim Mi-Kyung - Park Hee-Nam (Cha Eun-Sang's mother)
- Choi Jin-Ho - Choi Dong-Wook
- Jo Yoon-Woo - Moon Joon-Young
- Seo Yi-Sook - Hyo-Shin's mother
- Choi Eun-Kyeong - Ye-Sol's mother
- Ra Mi-Ran - Myung-Soo's mother
- Jung Chan-Woo - Kim Tan (young)
- Yang Hyun-Mo - Choi Young-Do (young)
- Yoon Jin-Seo - Cha Eun-Seok (Eun-Sang's older sister - cameo)
- Kim Hee-Cheol - Kim Hee-Cheol (ep.4)
- Choi Ji-Na - Young-Do's mother (ep.14,20)
- Wang Ji-Won - Yang Da-Kyung (ep.17,19-20)
- Lee Hyun-Jin - Bo-Na's older brother (ep.19)