Ok Taec-yeon (Korean: 옥택연; born December 27, 1988), known mononymously as Taecyeon, is a South Korean rapper, singer, songwriter, actor and entrepreneur. He is the rapper of the South Korean boy band 2PM.

In 2010, Ok debuted as an actor in the Korean drama Cinderella's Stepsister and since then has starred in television series Dream High (2011), Who Are You? (2013), Wonderful Days (2014), Assembly (2015), Let's Fight, Ghost (2016), Save Me (2017), The Game: Towards Zero (2020), Secret Royal Inspector & Joy (2021) and Vincenzo (2021) and Heartbeat (2023), as well as the movies Marriage Blue (2013) and House of the Disappeared (2017).