Lee Dong-hae (born October 15, 1986),[1] referred to as Donghae, is a South Korean singer, songwriter, composer, and actor.

[2] Under SM Entertainment, Donghae was put in singing, dancing, and acting lessons, and was then recruited into a five-member boy band Smile, with future bandmate Leeteuk, but the idea was soon dropped.

In August 2006, Donghae played the role of a human turned cyborg in the Korean version of BoA's music video drama, "Key of Heart".

[11][12] He also sang the ending theme song, "This is Love," which also featured fellow Super Junior-M member Henry.

[16] Donghae also sang his character Go Seung-gi's theme song "Plz Don't", which was released online on 20 August.

[17] In June 2012, Donghae reunited with Super Junior for their sixth studio album, Sexy, Free & Single.

[18] In the repackaged edition of the album, re-titled Spy, Donghae co-wrote the lyrics for "Only U" with Leeteuk; and co-composed "Haru" with Urban Zakapa's Kwon Soon-il.

Due to a scheduling conflict, Donghae turned down the casting offer for horror film 'Tunnel';[21][unreliable source?]

[22] Donghae was to join the cast of Quiz of God Season 4 as Han Si Woo, a medical researcher.

In August 2014, Super Junior's seventh album, Mamacita was released,[24] where Donghae also contributing music and lyrics to their second lead single, "Shirt".

Donghae also participated in the album production with writing lyrics and composing two songs, "Don't Wake Me Up" and "Alright".

[31] Following the completion of his mandatory military service, he and fellow Super Junior member Eunhyuk, held a fan meeting for Super Junior-D&E Hello Again on July 23 at Sejong University Daeyang Hall and participated on SM Town Live World Tour VI in Japan on July 27–28.

SJ Returns, a reality show featuring the idol group's development of their album, began airing on October 9.

In October 2022, Donghae was cast opposite Song Ha-yoon in the Genie TV romantic comedy series Oh!

Donghae entered through the Nonsan Army Training Center in South Chungcheong Province on his birthday.