Black River High School is a public high school located in Sullivan, Ohio. It was consolidated in 1961 by combining the districts from Homerville, Spencer, and Sullivan.
Black River's school colors are black and gold. The mascot is the pirate. The school fight song is "Across The Field". As of 2019, the school is a member of the Lorain County League. Black River had previously been a member of the Firelands Conference from 1964 to 1993, the Mohican Area Conference from 1993 to 2004, and the Patriot Athletic Conference (PAC-12) from 2005 to 2019.
Shared titles are denoted with an asterisk (*).