Kwon Sang-woo is a South Korean actor. He rose to stardom in 2003 with the romantic comedy film My Tutor Friend and the melodrama series Stairway to Heaven. His other notable credits include the films Once Upon a Time in High School (2004), 71: Into the Fire (2010), The Accidental Detective (2015) and its 2018 sequel, The Divine Move 2: The Wrathful (2019), and Hitman: Agent Jun (2020), as well as the television series Big Thing (2010), Medical Top Team (2013), and Queen of Mystery (2017).

My Tutor Friend is a 2003 South Korean romantic comedy film starring Kim Ha-neul and Kwon Sang-woo. Unglamorous Su-wan is a sophomore in college who gets hired to tutor rich troublemaker Ji-hoon, who is repeating his senior year of high school for the third time.