金孝淵（韓語：김효연 Kim Hyo-yun，1989年9月22日－）， 藝名孝淵（韓語：효연 Hyo Yeon），DJ界藝名為DJ HYO，韓國女歌手，女子組合少女時代及子團少女時代-Oh! GG的成員之一，是隊中中低音副唱、主rapper、主舞。

金孝渊（韩文：김효연;生于1989年9月22日），简称孝妍或DJ HYO，是韩国歌手、舞蹈家、DJ和电视名人。她作为女子组合少女时代（后来是少女时代-Oh！GG）于2007年8月成为韩国最畅销的艺人之一，也是韩国全球最受欢迎的女子组合之一。自 2016 年以来，她还以独唱艺术家的身份发行了单曲。

Kim Hyo-yeon (Hangul: 김효연; born September 22, 1989), referred to as Hyoyeon or DJ HYO, is a South Korean singer, dancer, DJ, and television personality. She debuted as a member of the girl group Girls' Generation (and later its subgroup Girls' Generation-Oh!GG) in August 2007, which went on to become one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Since 2016, she has also released singles as a solo artist.