Lawrence High School (LHS) is a public secondary school in Lawrence, Kansas, United States, operated by Lawrence USD 497 school district, and serves students of grades 9 to 12. The school is one of the two public high schools located in the city. Lawrence High enrolled 1,575 students in the 2020–2021 school year. The school colors are red and black and the mascot is the "Chesty Lion".

Lawrence is a member of the Kansas State High School Activities Association and offers a variety of sports programs. Athletic teams compete in Class 6A and are known as the "Chesty Lions". Extracurricular activities are also offered in the form of performing arts, school publications, and clubs. Throughout its history, Lawrence High has won more state championships in athletics than any other high school in the state of Kansas.