Ji Hyun-woo is a South Korean actor and musician. He was formerly the lead guitarist for Korean indie rock band The Nuts and is best known for his leading roles in the cable TV series Queen and I (2012) and KBS2 weekend drama Young Lady and Gentleman (2021–22).

Queen and I is a 2012 South Korean television series starring Ji Hyun-woo and Yoo In-na. The story centers around obscure actress Choi Hee-jin who falls in love with Kim Bung-do, a time-traveling scholar from the Joseon Dynasty (1392-1910) who jumps 300 years into the future to the 21st century.