The drama is based on a manhwa with the same title. Tamna the Island is set in 17th-century Joseon times as a young English castaway, William, comes to the island and meets Jang Beo Jin, Park Kyu, and Yan. The name "Tamna" refers to what is now called Jeju.


Cast
Seo Woo as Jang Beo Jin
Im Joo Hwan as Park Kyu
Pierre Deporte as William Spencer
Lee Sun Ho as Yan Kawamura
Lee Seung Min as Seo Min
Byun Woo Min as Jang Won Bin
Yang Hee Kyung as Eom Ssa Boo In
Kim Yoo Jung as Jang Beo Seol
Kim Mi Kyung as Choi Jang Nyeo
Lee Ho Jae as Park Chul
Bang Eun Hee as Go Ba Soon
Jung Joo Ri as Han Boon
Jo Seung Yun as Kim Yi Bang
Lee Hae Woo as Hyang Dul Yi
Seo Bum Shik as Jeon Chi Yong
Kim Ho Won as Hyang Dol Lee
Yoo Tae Woong as Han Philip
Park Hee Jin (박희진) as Jong Dal
Jo Moon Ui as Jong Dal's father
Lee Jung Sup as Kim Hoon Jang
Lee Han Wie
Lee Byung Joon
Han Sung Joo
Kim Yoon Seo (김윤서)
Lee Ho Sung (이호성)