Lee Seung Hyo (; born 5 May 1980) is a South Korean actor. He debuted in 2006. He rose to fame as Kim Alcheon in Queen Seondeok.
He was a sniper in his military service in the Joint Security Area (JSA) from December 2000 to February 2003. He graduated from Chungju National University and is attending Chung-Ang University Graduate School of Arts, majoring in Performance & Visual Media.
On February 12, 2022, Lee confirmed that he will get married in Seoul on March 1, 2022. His fiancé is Jung Hye-ri, the younger sister of actor Jung Tae-woo, who is 4 years younger than him.