Empress Ki

Ha Ji-won as Ki Seung-nyang / Ki Nyang, Empress Ki, wife of Ta Hwan, Empress Consort of the Yuan dynasty.

Jung Ji-so as young Ki Seung-nyang

Joo Jin-mo as Wang Yoo, King Choonghye of Goryeo, King of Goryeo, Seung-nyang's first love and fiancé.

Ahn Do-gyu as young Wang Yoo

Ji Chang-wook as Toghon Temür / ta Hwan, The last Emperor of the Yuan dynasty.

Baek Jin-hee as Tanashiri, first wife and Empress Consort of Ta Hwan.

Kim Seo-hyung as the Empress Dowager, Ta Hwan's aunt.

Lim Ju-eun as Bayan Khutugh, second wife and Empress Consort of Ta Hwan, niece of Baek Ahn.

Jeon Se-hyun as Lady Oh, Ta Hwan's Mongolian concubine. She is the daughter of Governor Ohgwang of Yunnan.

Park Ha-na as Lady Bu, Ta Hwan's Mongolian concubine. She is daughter of Governor Busaqui of Lingbei.

Jeon Gook-hwan as Yeon Chul, Empress Tanashiri's father and Yuan Dynasty's regent.

Kim Jung-hyun as Dang Ki-se, Yeon Chul's eldest son and Empress Tanashiri's oldest brother.

Cha Do-jin as Tap Ja-hae, Yeon Chul's greedy second son and Empress Tanashiri's second older brother.

Kim Young-ho as Baek Ahn, Empress Bayan Khutugh's uncle, Yuan Dynasty's regent.

Jin Yi-han as Tal Tal, Empress Bayan Khutugh's cousin, Baek Ahn's nephew, Yuan Dynasty's regent.

Cha Kwang-soo as Go Yong-bo

Lee Gye-young as Busaqui

Jang Soon-gook as Seol Do-kan

Park Tong-il as Haeng Sung-joo

Lee Won-jong as Dok-man, Goryeo-born who become the Yuan eunuch in Aekjung Palace.

Shin Seung-hwan as Kkwe-bo, Goryeo-born who was Ta Hwan's eunuch when he was a prince.

Choi Moo-sung as Park Bul-hwa, Goryeo-born who become the Yuan eunuch.

Jung Yoon as Kook-soo

Lee Eung-kyung as Court Lady Noh

Seo Yi-sook as Court Lady Seo, Empress Tanashiri's right-hand servant.

Yoon A-jung as Yeon-hwa / Court Lady Yeon, Empress Tanashiri's servant.

Lee Ji-hyun as Hong-dan, Seung-nyang's best friend, later her court lady.

Kim Myung-gook as Jang Soon-yong

Kwon Tae-won as Wang Man, King Choongsook. the 27th King of Goryeo, Wang Yoo's father.

Ryu Hyun-kyung as Princess Kyunghwa, Yuan-born who become King Choongsook's wife.

Lee Jae-yong as Wang Go, Prince Yeonan, King Simyang, Goryeo Royal Family member and the head of Chirwon Faction.

Choi Jung-won as Wang Gi, Grand Prince Gangneung, King Gongmin, the 31st King of Goryeo.

Lee Moon-sik as Bang Shin-woo, Goryeo's eunuch, part of Wang Yoo's group.

Kwon Oh-joong as Choi Moo-song, Goryeo warrior, part of Wang Yoo's group.

Yoon Yong-hyun as Jeom Park-yi, Goryeo Kings' assistant and servant.

Yoo In-young as Yeon Bi-soo / Batoru, a woman warrior controlling Yuan's western frontier and the silk road, Wang Yoo's ally.

Seo In-woo as Soo-ri, Batoru's aide.

Song Kyung-chul as Mak-saeng / Jeok-ho, village chief in Goryeo Dynasty who become the Yuan Emperor's eunuch.

Kim Myeong-su as Ki Ja-oh, King Yeongahn, Seung-nyang's father and a royal commander.

Kim Jin-seong as Prince Maha, Wang Yoo and Seung-nyang's son who is adopted by Tanashiri.

Seol Wo-hyung as young Prince Maha

Jung Woong-in as Yeom Byung-soo

Kim Hyung-bum as Jo-cham

Jo Jae-yoon as Golta, the main antagonist in the series and a Yuan's eunuch.

Kim Jin-woo as Ayushiridara (Biligtü Khan), Ta Hwan and Seung-nyang's son.

Jo Woo-jin as Wang Go's soldier

Kim Ye-ryung as Lady Lee, Seung-nyang's mother.

Lee Jung-sung as Kim Soon-jo

Oh Kwang-rok as Heuk-soo

Kim Moo-young as Na-moo

Han Hye-rin as Park Oh-jin, Ta Hwan's Korean concubine.

Shim Yi-young as a fortune teller

Park Hae-mi as a shaman

Seo Bum-shik as Won-jin

Jung Byung-ho as Joo Gook-chung

Jung Soo-in as a Courtesan

Seo Ji-yeon as an Inspector Court Lady

Son Kwang-up as the killer Mak-son

Yoon Young-mok as a coward captain

Jung Jae-min as Yirinjilban

Choi-hyun as Ballachupmokah

Kim Hyo-won as Emperor Myungjong of Yuan, Emperor of Yuan, Ta Hwan's father.