Although modern-day Pigeon River park is day-use only, this was not always the case. Originally only 5 hectares and known as Middle Falls Provincial Park, the park was opened in 1957. The original land is now the Middle Falls Walk and parking lot, but was once a full-fledged recreational park, featuring group camping. In 1973, a park reserve was established east of the Middle Falls Provincial Park by the Thunder Bay government. This 902 hectare park reserve was offered to the province by Thunder Bay in 1983, and officially agglomerated into Pigeon River Provincial Park in 1985. There was even plans to create a full campground near the modern-day tourist information centre, but these fell through due to a few reasons. Of course there's the usual lack of demand, but more importantly - the 907 ha park was now a natural environment park, with conservation overtaking recreation as the main goal. And thus, the park has put its focus on that ever since, including reclaiming 42 hectares of flooded river swampland into dry land in 1995.
As for the original park name, Middle Falls, it was named after the waterfalls it was originally sat upon. As for the current name, it comes from the Voyageur term "Riviere aux Tourtes", coming from the French Voyageurs who traversed the river. "Tourtes", meaning pigeon, allegedly deriving from the vast swarms of the now-extinct passenger pigeon in the area.