Frankfort Senior High School is a public secondary school in Frankfort, Indiana, United States.

It serves grades 9-12 for the Community Schools of Frankfort.

The demographic breakdown of the 893 students enrolled for the 2021–22 school year was: 67.6% of the students were eligible for free or reduced-cost lunch.

[1] Frankfort's Hot Dogs compete in the Sagamore Conference.

The following Indiana High School Athletic Association (IHSAA) sanctioned sports are offered:[2]