Si Miller Arena

CJUL was an English-language Canadian radio station located in Cornwall, Ontario. Owned and operated by Corus Entertainment, it broadcast on 1220 kHz with power of 1,000 watts as a class C station, using an omnidirectional antenna. The station was on the air from 1945 to 2010.

Cornwall Collegiate and Vocational School (CCVS) is a high school located in Cornwall, Ontario. Upper Canada District School Board operates the school. Additionally, Ahkwesasne Mohawk Board of Education (AMBE), which operates schools on the Canadian portion of Akwesasne, has a tuition agreement to send high school students to this school. It was built in 1806 and is one of the oldest schools in Canada. The school's bicentennial in 2006 attracted over 1500 former students back to the school.

Aʼnowaraʼko꞉wa Arena is a 3,000-seat multi-purpose arena in Cornwall Island, Ontario on the Akwesasne reservation.

Cornwall Island (Mohawk: kawehno:ke) is an island in the Saint Lawrence River, directly south of the city of Cornwall. The island is located completely within Canada, but it is also part of the Akwesasne Mohawk reserve, which straddles the Canada–United States border and the Quebec–Ontario border. The Seaway International Bridge, with a channel crossing on each side of the island, provides road access to Cornwall Island from both Canada and the United States.

L'École secondaire catholique La Citadelle is a French-Language Catholic high school located in Cornwall, Ontario. It is managed by the Conseil scolaire de district catholique de l'Est ontarien. In 1950, Saint-Laurent High School, the precursor to La Citadelle, was established to cater to the predominantly French-speaking population of Cornwall Township. This initial step towards French-language education was facilitated by Laurier Carrière, an inspector for bilingual schools at the time. In 1965, a modest concession was made with the introduction of geography and history courses taught in French. However, it wasn't until 1968, a year before the regionalization of school boards, that a group of dedicated individuals, including Jeannine Séguin, Clément Charette, Robert Brault, Bernard Bertrand, Rhéal Martel, Jules Renaud, and Fathers Bernard Guindon and C.E. Claude, appeared before the Cornwall Board of Education. They boldly proposed that Saint-Laurent High School be designated as a French school and presented a detailed plan to achieve this goal. While the Board accepted the principle of a French-language school, they delayed further action, opting to wait for the regionalization of the Stormont, Dundas, and Glengarry Board. The fight for an independent French secondary school in Cornwall intensified with the passage of Bill 141 and the establishment of French-language advisory committees. Despite facing resistance from the Board of Education, figures like Marcel Massé, Paul Rouleau, Claude Corbeil, and Bernard Bertrand, along with school trustees Albert Morin, Gérard Gauthier, Jean-Guy Gauthier, Jean Guindon, and Gérald Desjardins, tirelessly advocated for the cause. In a surprising turn of events, overcrowding at Saint-Laurent school in September 1970, coupled with the absence of planned construction within the city, led the Board to accept the creation of two schools within the same building. This temporary relay system, based on the language of instruction, was intended to last for two years until a new high school could be built in the city's east end. In September 1972, the French section gained a separate administration with the appointment of Jeannine Séguin as principal and Jules Renaud as assistant principal. However, by the spring of 1973, tensions rose due to the proposed extension of the relay system, uncertainty regarding which student group would be relocated, and lobbying by a Saint-Lawrence High School committee to maintain their morning relay schedule. The mounting pressure prompted the student government of the French relay to take action. They formed a "committee of eight," rallied local organizations, and initiated a strike on March 14, 1973. This strike, which continued until the creation of Professor Thomas Symons' committee of inquiry on April 4, ultimately led to the Davis government's intervention. The Symons report, released on April 20, vindicated the local community's demands, and their slogan "We want it, we will have it" became a triumphant reality. In the aftermath, the school board targeted teachers in an act of retribution. Jacques Boyer and Paul Bezozzi were dismissed, and three other teachers faced disciplinary action for their alleged involvement in the student strike. This injustice sparked the formation of a united Franco-Ontarian front, encompassing AEFO, ACFO, AFCSO, API, and the Youth Department, to fight against this discrimination. Gérard Gauthier resigned from the Council in protest. On June 12, 1973, the school was officially named "La Citadelle," inspired by the writings of Saint-Exupéry, symbolizing the institution's significant role within the region. The school's dedication ceremony on May 30, 1975, was attended by prominent figures like Minister of Education Thomas Wells, Conseil Supérieur de langue française President Gérard Raymond, and Superintendent Jean-Paul Scott, a staunch advocate for Francophone rights. The celebrations, including a cultural event known as "La Nuit de La Citadelle," drew over a thousand participants.

Cornwall Street Railway Light and Power Company Limited, operating as Cornwall Electric, is an electricity transmission and distribution utility, licensed by the Ontario Energy Board (OEB) to operate in Cornwall, Ontario, Canada. Originally established in 1887 as the Stormont Electric Light and Power Company and merged with the Cornwall Electric Street Railway Company in 1905, it is one of the oldest utilities in Canada. The company supplies electricity to approximately 25,365 customers in the city of Cornwall, the townships of South Glengarry and South Stormont, and on a portion of the Mohawk people's territory of Akwesasne, all located in Eastern Ontario. It crosses provincial boundaries to obtain the bulk of the power it requires directly from Hydro-Québec, while generating a small amount of its own, using a cogeneration system, a first such use in Canada. Thomas Edison visited Cornwall in 1883 to see his electric incandescent light system illuminate a local factory. The incorporation of the Stormont Electric Light and Power Company followed in 1887. Since then, the company has undergone several ownership changes during its history, transitioning from a private company to a municipally owned utility to one that is owned and operated by a multinational publicly traded company.

Cornwall is a city in Eastern Ontario, Canada, situated where the provinces of Ontario and Quebec and the U.S. state of New York converge. It is the seat of the United Counties of Stormont, Dundas, and Glengarry and is Ontario's easternmost city. Cornwall is named after the English Duchy of Cornwall; the city's coat of arms is based on that of the duchy with its colours reversed and the addition of a "royal tressure," a Scottish symbol of royalty. It is the urban centre for the surrounding communities of Long Sault and Ingleside to the west; the Mohawk Territory of Akwesasne to the south; St. Andrews West and Avonmore to the north; and Glen Walter, Martintown, Apple Hill, Williamstown, and Lancaster to the east. The city straddles the St. Lawrence River and is home to the St. Lawrence Seaway Management Corporation, which oversees navigation and shipping activities for the St. Lawrence Seaway. It lies within the Quebec City–Windsor Corridor along Ontario Highway 401, is a major port of entry from the United States into Canada, and is positioned to support some of Cornwall's largest industries, which include logistics, distribution, and call centres.

The Seaway International Bridge is an international crossing connecting the U.S. state of New York, Akwesasne Mohawk Territory, and the Canadian province of Ontario. It consists of the South and North Channel Bridges. The South Channel Bridge was opened in 1958, and spans the St. Lawrence Seaway. The North Channel Bridge, opened in 2014, connects the City of Cornwall in Ontario to Cornwall Island in Akwesasne Mohawk Territory. The bridge is among the busiest on the Canada–United States border in the state of New York, with about two million crossings a year. It is jointly owned by the Federal Bridge Corporation (a Crown corporation of the Canadian federal government) and the Great Lakes St. Lawrence Seaway Development Corporation (an agency of the United States Department of Transportation), and is operated by the Seaway International Bridge Corporation, which came under the control of the Federal Bridge Corporation from the Saint Lawrence Seaway Authority in 1998. Previously known as the Cornwall-Massena International Bridge, the SIBC was a private bridge whose outstanding stock was purchased by the Saint Lawrence Seaway Authority (Canada) and the Saint Lawrence Seaway Development Corporation (U.S.) in 1957. It was incorporated in Canada five years later. In 2000, the international border crossing that the Seaway International Bridge comprises was named the Three Nations Crossing, in recognition that it connects the Akwesasne Mohawk Territory, a self-governing nation, to the United States and Canada. On January 24, 2014, the opening of a new lower-level bridge marked the official closing of the former high-level North Channel crossing of the Seaway International Bridge. This project was estimated to cost $75 million, entirely funded by the Government of Canada. It was announced in 2010 that the Government of Canada would be going forward with this project that would involve the construction of a new low-level bridge as well as the demolition of the Seaway International Bridge to ensure the longevity of the border crossing, assuring that the former bridge was still in safe driving condition. The high-level Seaway International Bridge was completely demolished in 2015. At the opening ceremony of the new bridge, the first person to make the crossing was Raymonde Champagne, who had also been the first person to cross the high-level bridge in 1962.

The Akwesasne Freedom School was founded in 1979 in a grass-roots effort by the Mohawk tribe. The Akwesasne Freedom school is located in St. Regis Mohawk Reservation (also known as Hogansburg), New York. It was founded with the intention of strengthening the Mohawk culture which was once in danger of being extinct. The Akwesasne Freedom School is a full-immersion Mohawk school focusing on educating children in the Mohawk language, culture, and customs. The school has survived for over 40 years without any federal or state funding.

The Three Nations Crossing is a border crossing on the Canada–US border, connecting the city of Cornwall, Ontario in Canada to Massena, New York, in the United States. The crossing is associated with the Seaway International Bridge, which crosses the two channels on each side of Cornwall Island, which is located on the St. Lawrence River. The bridge is 4.7 km (2.9 mi) in length.

Massena Castings Plant (also known as the Central Foundry Division) was a General Motors aluminium casting foundry located in Massena, New York. The plant utilized the die casting and lost-foam casting processes, operating from 1959 to May 2009. It was originally built to cast engine blocks and cylinder heads for the Chevrolet Turbo-Air 6 engine used in the Chevrolet Corvair from 1960 until 1969. Aluminum parts included the block, heads, flywheel housing, crankcase cover, clutch housing, and pistons. 92 lb (41.7 kg) of aluminum was used in each engine.

St. Joseph's Secondary School (SJSS) or St. Joseph's Catholic Secondary School (SJCSS) is a separate (publicly funded Catholic) secondary school in Cornwall, Ontario, Canada. Falling under the jurisdiction of the Catholic District School Board of Eastern Ontario, it shares its building with the newly amalgamated Sacred Heart Catholic School and grade 7-8 wing (where General Vanier Intermediate School was previously housed). Additionally, Ahkwesasne Mohawk Board of Education (AMBE), which operates schools on the Canadian portion of Akwesasne, has a tuition agreement to send high school students to this school.