The Blakeslee Forging Company is a historic industrial complex at 100 West Main Street in the Plantsville area of Southington, Connecticut. The surviving six buildings, dating to about 1910 or later, were developed for a company founded in 1877 that specialized in drop forging. The buildings are well preserved structures typifying industrial buildings found in Southington from that era. The complex was listed on the National Register of Historic Places in 1988.