Son Seung Yeon (손승연), also known as Sonnet Son, is a South Korean singer.

Following her victory on The Voice of Korea, she debuted with the mini-album The Ugly Duckling, Fly Up (미운 오리의 날개 짓) in 2012.

She is known for appearing as a frequent guest on the singing competition program Immortal Songs 2, and for recording original soundtracks for several Korean television series, including “Bad Dream” for The Guest (2018) and “Sad” for The World of The Married (2020).