William L. Dickinson High School is a four-year comprehensive community public high school located in Jersey City, Hudson County, in the U.S. state of New Jersey, serving students in ninth through twelfth grades as part of the Jersey City Public Schools. Dickinson occupies a prominent location on Bergen Hill overlooking lower Jersey City and the New York Harbor. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1929.

As of the 2023–24 school year, the school had an enrollment of 1,856 students and 129.2 classroom teachers (on an FTE basis), for a student–teacher ratio of 14.4:1. There were 1,143 students (61.6% of enrollment) eligible for free lunch and 94 (5.1% of students) eligible for reduced-cost lunch.