The Great King, Sejong

Director

• 
  Kim Won Suk
• 
  Kim Sung Geun

Screenwriter

• 
  Kim Tae Hee
• 
  Yoon Sun Joo

Main Role

• 
  Kim Sang Kyung

  King Se Jong

  Main Role
• 
  Kim Yeong Cheol

  King Tae Jong

  Main Role
• 
  Choi Myung Gil

  Queen Wong Young

  Main Role
• 
  Park Sang Min

  Crown Prince Yang Nyung

  Main Role
• 
  Kim Sung Ryung

  Hyo Bin [King Tae Jong's concubine]

  Main Role
• 
  Lee Yoon Ji

  Queen So Heon

  Main Role
• 
  Lee Chun Hee

  Jang Yeong Shil

  Main Role

Support Role

• 
  Noh Young Gook

  Abdicated King Jung Jong

  Support Role
• 
  Ahn Shin Woo

  Prince Hyo Ryeong

  Support Role
• 
  Yoon Young Joon

  Prince Kyung Nyung [Hyo Bin's son]

  Support Role
• 
  Joo Ah Reum

  Princess Jeong So

  Support Role
• 
  Choi Jong Won

  Ha Roon [Prime Minister]

  Support Role
• 
  Kim Gab Soo

  Hwang Hee [Minister of Rites]

  Support Role
• 
  Kim Myung Gon

  Ok Hwan

  Support Role
• 
  Kim Gi Hyeon

  Yoo Jung Hyun

  Support Role
• 
  Go In Beom

  Hwang Uhm

  Support Role
• 
  Lee Won Jong

  Yoon Hwa

  Support Role
• 
  Jeon Hyun

  Lee Chun

  Support Role
• 
  Sun Dong Hyuk

  Choi Yoon Duk

  Support Role
• 
  Jung Ui Kap

  Moo Bi

  Support Role
• 
  Choi Joo Bong

  Kim Han Ro

  Support Role
• 
  Kim Jeong Hak

  Kim Moon

  Support Role
• 
  Sul Ji Yoon

  Choon Wol

  Support Role
• 
  Lee Jung Hyun

  Lady Sinbi

  Support Role
• 
  Jang Se Jin

  So Sadamori

  Support Role
• 
  Kang Hae In

  Kwon Seung Hee

  Support Role
• 
  Moon Cheon Shik

  Jeon Il Ji

  Support Role
• 
  Lee Dal Hyung

  Shin Jang

  Support Role
• 
  Yoon Gi Won

  Uhm Ja Chi

  Support Role
• 
  Kim Bo Mi

  [Court lady]

  Support Role
• 
  Jung Yoo Mi

  Da Yeon

  Support Role
• 
  Oh Yeon Seo

  U Ri

  Support Role
• 
  Ha Yong Jin

  Hae Soo / Chinese envoy

  Support Role
• 
  Hwang Bum Shik

  No Hee Bong

  Support Role
• 
  Lee Sung Min

  Choi Man Ri

  Support Role
• 
  Kwon Yul

  Shin Sook Joo

  Support Role
• 
  Kim Joo Young

  Lee Sook Bun

  Support Role
• 
  Kim Eung Soo

  Min Moo Goo

  Support Role
• 
  Kim Seung Wook

  Jeon Haeing Soo

  Support Role
• 
  Cho Seong Ha

  Lee Soo

  Support Role
• 
  Jo Jae Wan

  Jang Won

  Support Role
• 
  Kim Ha Kyun

  Heo Jo

  Support Role
• 
  Lee Jin Woo

  Jung In Ji

  Support Role
• 
  Jung Heung Chae

  Kang Sang In

  Support Role
• 
  Lee Kyung Young

  Min Moo Jil [Yang Nyeong's supporting force]

  Support Role
• 
  Kil Geum Sung

  Seon Deok Jae

  Support Role
• 
  Kim Yeong Gi

  Byung Gye Ryang

  Support Role
• 
  Jang Ki Yong

  Lee Sun Mong

  Support Role
• 
  Kim Hong Pyo

  Yi Sun Ji [Astronomer]

  Support Role
• 
  Lee Han Gal

  Kang Hwi

  Support Role
• 
  Kang Ji Hoo

  Poong Gae

  Support Role
• 
  Lee Won Bal

  Park Sil

  Support Role
• 
  Yeo Min Joo

  Crown Princess Bang / Lady Bang

  Support Role
• 
  Lee Sang Yeob

  Lee Hyang / Prince Moon Jong

  Support Role
• 
  Kang Bit

  Lee Hyang / Prince Moon Jong [Young]

  Support Role
• 
  Yoo Seo Jin

  Se Ja Bin [Prince Yang Nyeong's wife]

  Support Role
• 
  Kang Kyung Hun

  Cho Koong Jang [King Ahn's consort]

  Support Role
• 
  Kim Seo Yoon

  Princess Jung So [Young]

  Support Role
• 
  Baek Seung Do

  Prince Seong Nyeong

  Support Role
• 
  Lee Dae Yeon

  Choi Hae San

  Support Role
• 
  Lee Byung Wook

  Jeoljae Kim Jong Seo

  Support Role
• 
  Park Young Ji

  Park Eun

  Support Role
• 
  Choi Sang Hoon

  Shim Ohn

  Support Role
• 
  Lee Kyung Young

  Min Moo Jil

  Support Role
• 
  Kim Hyung Il

  Min Moo Hyul

  Support Role
• 
  Jung Dong Hwan

  Jo Mal Saeng

  Support Role
• 
  Oh Seung Yun

  Emperor Yingzong

  Support Role
• 
  Ahn Hae Sook

  [Shim Ohn's wife]

  Support Role
• 
  Cha Min Ji

  Dam Eeh

  Support Role
• 
  Yoon Se Ah

  Lady Hye Bin / Yang

  Support Role
• 
  Jung Eun Pyo

  No Bi

  Support Role
• 
  Khan

  Lee Bang Suk

  Support Role
• 
  Kang Han Byul

  Grand Prince Anpyeong [Child]

  Support Role
• 
  Lee Woo Suk

  Min Moo Hwe

  Support Role
• 
  Yum Chul Ho

  Dong Kwon Doo

  Support Role
• 
  Park Sang Jo

  Lee Jong Mu

  Support Role
• 
  Choi Sang Kil

  Jang Chil Sang

  Support Role

Guest Role

• 
  Park Yong Soo

  Han Young Ro

  Guest Role
• 
  Min Joon Hyun

  [Public official]

  Guest Role
• 
  Lee Hyun Woo

  Prince Choong Nyeong (later Sejong) [Young](Ep. 1-5]

  Guest Role
• 
  Jung Chan Woo

  Prince Yang Nyung [young]

  Guest Role
• 
  Lee In

  Prince Yang Nyeong [Young]

  Guest Role
• 
  Tae Woong

  Prince Hyo Ryung [Young]

  Guest Role
• 
  Nam Ji Hyun

  Princess Shim [Young]

  Guest Role
• 
  Choi Min Ho

  Prince Soo Yang [Young]

  Guest Role
• 
  Park Kwi Soon

  No Boon

  Guest Role
• 
  Kim Tae Young

  [Japanese merchant]

  Guest Role
• 
  Kim Ji Young

  [Old fashioned grandmother]

  Guest Role
• 
  Jung Doo Hong

  Lee Seong Gye

  Guest Role
• 
  Seo Jin Won

  Jong Jun

  Guest Role
• 
  Kim Seon Eun

  [Follower]

  Guest Role
• 
  Goo Jung Rim Guest Role

Unknown

• 
  Kwak Seung Nam Unknown
• 
  Ha Eun Seol Unknown
• 
  Kang Min Suk Unknown
• 
  Lee Won Suk Unknown
• 
  Kang Chul Sung Unknown
• 
  Son Seon Geun Unknown
• 
  Park Mi Sook Unknown
• 
  Yoo Soon Chul Unknown
• 
  Kim Min Chae Unknown
• 
  Park Ji Young Unknown
• 
  Kim Han Unknown
• 
  Kim Jin Sung Unknown
• 
  Maeng Bong Hak Unknown
• 
  Im Jin Taek Unknown