This page lists all the cast members in the Netflix series Squid Game.
*Numbers in parentheses indicate the character's assigned number in the Squid Game.
- Lee Jung-jae as Seong Gi-hun (456), a chauffeur and a gambling addict, he lives with his mother and struggles to financially support his daughter. He participates in the Game to settle his many debts.
- Park Hae-soo as Cho Sang-woo (218), the head of the investment team at a securities company, he is a junior to Gi-hun and was a gifted student who graduated top of his class at Seoul National University. He is now wanted by the police for stealing money from his clients and using that money to gamble.
- Jung Ho-yeon as Kang Sae-byeok (067), a North Korean defector who enters the Game to pay for a broker to find and retrieve her surviving family member(s) who are still across the border.
- O Yeong-su as Oh Il-nam (001), an elderly man with a brain tumor who secretly is running the Squid Games. However he prefers playing the Game as opposed to waiting to die in the outside world.
- Anupam Tripathi as Ali Abdul (199), an immigrant from Pakistan who joins the games to regain his money for his family, that his exploitative boss took.
- Heo Sung-tae as Jang Deok-su (101), a gangster and mob-boss who enters the Game to settle his massive gambling debts.
- Kim Joo-ryoung as Han Mi-nyeo (212), a debtridden manipulative woman who claims to be a poor single mother who recently gave birth.
- Wi Ha-joon as Hwang Jun-ho, a police officer who sneaks into the Game as Guard 29 to find his missing brother.
- *Yoo Sung-joo as Byeong-gi (111), a doctor who secretly works with a group of corrupt guards to traffic the organs of dead participants in exchange for information on upcoming games.
- *Lee Yoo-mi as Ji-yeong (240), a young woman who was just released from prison after killing her sexually and physically abusive father.
- Yoon Don-sun as No Sang-hun (119), a player who defends himself and confronts to the employees.
- *Kim Si-hyun as Player 244, a pastor who rediscovers his faith during the Game.
- *Lee Sang-hee as Player 017, a former glass-maker with more than 30 years experience.
- *Kim Yun-tae as Player 069, a player who joins the Game with his wife, Player 070.
- *Lee Ji-ha as Player 070, a player who joins the Game with her husband, Player 069.
- Kwak Ja-hyoung as Player 278, a player who joins Deok-su's group and acts as his henchman.
- Christian Lagahit as Player 276, a player who joins Seong Gi-hun's group in the Tug of War round.
- Won Choon-gyu as Player 066, a player who call out the Squid Game staff for killing the other players and decided to not return to the Squid Games after voting on the games' termination.
- Kim Young-ok as Gi-hun's mother
- Cho Ah-in as Seong Ga-yeong, Gi-hun's daughter
- Kang Mal-geum as Gi-hun's ex-wife and Ga-yeong's mother
- Park Hye-jin as Sang-Woo's mother
- Park Si-wan as Kang Cheol / Sae-byeok's brother