The North Central Conference was an OHSAA athletic league whose final remaining members were located in northwest and north-central Ohio. The league's last day of operation was June 30, 2014.
The Toledo Area Athletic Conference (TAAC) is a high school athletic conference located in northwest Ohio, with member schools stretched across Lucas, Williams, and Wood counties. It was formed in 1988, and the league sponsors football, cross country, volleyball, golf, basketball, wrestling, baseball, softball, and track & field.
The Suburban Lakes League (SLL) was an OHSAA athletic league with 7 member schools located in northwest Ohio. The league was formed in 1972 by former members of the Northern Lakes League, Sandusky Bay Conference, and the Lakeshore Conference.
The Blanchard Valley Conference is an Ohio High School Athletic Association affiliated athletic league located in Hancock, Putnam, and Wood Counties in northwest Ohio. Its name derives from the Blanchard River, which runs through the area in which the schools are located. Findlay, which is part of the Northern Lakes League, and Cory-Rawson, which is a part of the Northwest Central Conference, are the only high schools in Hancock County that are a member of the Ohio High School Athletic Association that aren't part of the BVC.
The Midland Athletic League was an OHSAA athletic league located in northwest Ohio that was formed in 1985. Mark King was the last commissioner. The league folded following the 2013-14 school year as its members found new league homes. The last day of league operation was June 30, 2014.
The Northern Ohio League (NOL) was an OHSAA athletic league in north central Ohio that began competition in 1944 and disbanded in 2017 after six of its seven members joined the Sandusky Bay Conference.
Huron High School is a public high school in Huron, Ohio. It is the only high school in the Huron City Schools district. The athletic teams are known as the Huron Tigers. The school is a member of the Sandusky Bay Conference (SBC).
Margaretta High School is a public high school in Castalia, Ohio. It is the only high school in the Margaretta Local Schools district. They are members of the Sandusky Bay Conference.
Sandusky Central Catholic School is a Catholic, private school in Sandusky, Ohio. Founded in 1902, it is administered by the Roman Catholic Diocese of Toledo.
St. Wendelin Catholic School was a private, Catholic high school in Fostoria, Ohio. It was part of the Roman Catholic Diocese of Toledo.
The Mid-Ohio Athletic Conference is an OHSAA athletic league whose members are located in the Ohio counties of Crawford, Marion, and Richland. The league was established in the fall of 1990.
The Northern Buckeye Conference (NBC) is an OHSAA high school athletic conference that began athletic competition in 2011 with 8 high schools from Northwest Ohio's Ottawa and Wood counties as members.
The Lake Michigan Conference was an interscholastic athletic conference affiliated with the Michigan High School Athletic Association. It was located in Northern Michigan and contained eight teams that encompasses six counties: Antrim County, Charlevoix County, Crawford County, Emmet County, Grand Traverse County, and Kalkaska County.
The Firelands Conference is an Ohio High School Athletic Association (OHSAA) athletic league located in north-central Ohio. The league was formed in the 1960–61 school year and is named for the Firelands area of the old Western Reserve, where most of the member schools reside. High schools in this conference are located in Ashland, Huron, and Richland counties. Some of the schools' district boundaries extend into the neighboring counties of Crawford, Erie, and Lorain. Most of the founding schools came from the defunct Huron-Erie League.
The Three Rivers Athletic Conference was an Ohio High School Athletic Association (OHSAA) high school athletic conference that began athletic competition in 2011 and lasted until 2023 with 10 high schools from Northwest Ohio, seven of which were from the Toledo metropolitan area, and one each from the cities of Findlay, Fremont and Lima. Ken Myers, former director of public safety and public services in Fremont, was the league's inaugural commissioner. The three rivers from which the conference derived its name are the Maumee, Sandusky, and Blanchard.
The Sandusky River League was an OHSAA-sponsored league that began athletic play in the 2014-15 school year. The league sponsored football, cross country, volleyball, golf, basketball, wrestling, baseball, softball, and track & field. The following were the inaugural members:
This is a list of high school athletic conferences in the Northwest Region of Ohio, as defined by the OHSAA. Because the names of localities and their corresponding high schools do not always match and because there is often a possibility of ambiguity with respect to either the name of a locality or the name of a high school, the following table gives both in every case, with the locality name first, in plain type, and the high school name second in boldface type. The school's team nickname is given last.
This is a list of former high school athletic conferences in the Northwest Region of Ohio, as designated by the OHSAA. If a conference had members that span multiple regions, the conference is placed in the article of the region most of its former members hail from. Because the names of localities and their corresponding high schools do not always match and because there is often a possibility of ambiguity with respect to either the name of a locality or the name of a high school, the following table gives both in every case, with the locality name first, in plain type, and the high school name second in boldface type. The school's team nickname is given last.
The Vanguard-Sentinel Career and Technology Centers are joint vocational schools located in Fremont, Ohio and Tiffin, Ohio. Vanguard Tech Center is located in Fremont, adjacent to Fremont Ross High School, while Sentinel Career and Technology Center is located south of Tiffin.
The Northern 8 Football Conference is an 8-man football conference that began competition in the fall of 2020 and is made up of 8-man teams from high schools located in Ohio.
