Map - Mattawa, Ontario (Mattawa)

Mattawa is a town in northeastern Ontario, Canada on Algonquin Nation land at the confluence of the Mattawa and Ottawa Rivers in Nipissing District. Mattawa means "Meeting of the Waters" in the Algonquin language. The first Europeans to pass through this area were Étienne Brûlé and Samuel de Champlain.

The area is historically inhabited by Algonquin Indigenous peoples have who used the Mattawa River as an important transportation corridor for many centuries. In 1610, Étienne Brûlé and in 1615, Samuel de Champlain were the first Europeans to travel through the Mattawa area. For some 200 years thereafter, it was a link in the important water route leading from Montreal west to Lake Superior. Canoes travelling west up the Ottawa turned left at "the Forks" (the mouth of the Mattawa) to enter the "Petite Rivière" ("Small River", as compared to the Ottawa), before continuing on to Lake Nipissing.

Other notable travellers who passed by Mattawa include: Jean Nicolet in 1620, Jean de Brébeuf in 1626, Gabriel Lallemant in 1648, Pierre-Esprit Radisson and Médard des Groseilliers in 1658, La Verendrye in 1731, Alexander MacKenzie in 1794, and David Thompson in 1812.

The Mattawa House was established by the Northwest Company in 1784. In the 1820s and 1830s, the Hudson's Bay Company (after it had merged with the Northwest Company) sent canoe brigades from their Fort Coulonge Post to the Mattawa River junction in order to trade furs. In 1837, a permanent post was established, but was moved to a new site in the centre of present-day Mattawa in 1843. It was subordinate to Fort Témiscamingue and Fort Coulonge, but after the arrival of the telegraph in 1871 and the railroad in 1880, it became the headquarters of the Timiskaming District. As the fur trade diminished and the population grew, the post became a general store, trading merchandise to supply lumbermen. It closed in the early 20th century (1908 or 1912, depending on source).

In the 19th century, Mattawa became a hub for the logging industry, which would harvest large untouched stands of white pine in the area and use the Mattawa River to transport logs to sawmills. In 1881, the railroad was built to Mattawa. It was mostly built by French Canadian labourers. After the railroad's completion, some of these labourers and their families settled in Mattawa (and surrounding areas), bringing with them their culture and heritage.

Logging is still an important industry in this region, and nearby provincial parks and wilderness support the camping/hunting/fishing tourism industry in Mattawa today. Mattawa is located on the Canadian Pacific Railway Chalk River subdivision, connecting Smiths Falls and North Bay, with an additional connection to Témiscaming, Quebec.

Mattawa elected Canada's first-ever Black mayor, Firmin Monestime, in 1963. He served until his death in 1977.

In April 2010, the old Mattawa hospital (visible as the red building in the adjacent image) was demolished amid controversy, since the building was a local landmark for which heritage status was considered. A new Mattawa Hospital had been in service for about a year. The area is also served by the regional hospital in nearby North Bay. The old hospital site is expected to be used for the construction of a new secondary school, funded by the Province of Ontario through the Conseil Scolaire de District Catholique Franco-Nord.