Olathe West High School is a fully accredited public high school located in Olathe, Kansas, United States, serving students in grades 9–11 and expanding to include grades 9-12 for the 2018-2019 school year. The school is one of five high schools in the Olathe School District and also one of fourteen in the Sunflower League. The school colors are royal blue, silver, and navy, and the school mascot is the Owl.
The expected enrollment is approximately 900 students for 2017–18. Olathe West was established in 2017 to help educate the rapidly increasing population of Olathe. Olathe West is a member of the Kansas State High School Activities Association and offers a variety of sports programs. Extracurricular activities are also offered in the form of performing arts, school publications, and clubs.