Ontario

Magellan Aerospace is a Canadian-headquartered integrated aerospace company that designs and manufactures aeroengine and aerostructure assemblies, rocket and satellite systems, military and space products, and provides repair and overhaul services.

Telesat is an Ottawa-headquartered satellite operator serving commercial and government customers through its existing geostationary business while building the Telesat Lightspeed low-Earth-orbit network. Lightspeed is designed around Ka-band communications and optical links between satellites, with ground landing stations, points of presence and customer network connections completing the service path. Government applications include Arctic communications, maritime and aeronautical connectivity, and beyond-line-of-sight command and information exchange. On August 4, 2026, Canada awarded Telesat LEO ULC a C$2.3 billion contract before tax for the Arctic military Ka-band component of the Enhanced Satellite Communication Project–Polar. The service is scheduled for 2028 and covers 65–90 degrees north. The award expanded the planned Lightspeed constellation from 156 to 225 satellites, including 69 additional satellites from MDA Space. Two five-year options are valued at C$214 million and C$218 million. Terminals, ground systems, training and end-to-end integration require a separate agreement; the MDA-led UHF/X-band component is a different procurement. Telesat is developing the partner interfaces needed to turn that network into usable services. Its September 22, 2026 letter of intent with Kongsberg concerns evaluating Lightspeed integration into defence platforms and architectures. A separate September 1 collaboration between Telesat Government Solutions and Cailabs concerns optical-connectivity studies and demonstrations. Both add integration work around the contracted network; neither identifies an accepted combined platform or a new operational service.

Canadian technology and defence prime with activities across naval in-service support, systems engineering, integrated logistics, C4ISR, optronics, avionics, cybersecurity, urban systems, and research and technology.

Federal nonprofit building Canada's rocketry talent, test, competition, and industry ecosystem while coordinating a government-funded reusable semi-cryogenic turbopump development project.

Radiation Solutions is a Mississauga nuclear-instrumentation company developing stationary, mobile, airborne, portable and handheld systems for detecting, identifying, measuring and mapping ionizing radiation.

NORTAC Defence is an Ottawa secure-communications and command-and-control company whose TITAN ecosystem fuses data from remote devices, sensors, uncrewed systems, satellite, cellular, radio, and mesh bearers into operational situational awareness.

Shark Marine Technologies is a St. Catharines underwater-technology manufacturer producing ROVs, diver navigation and delivery systems, sonar, mission software and supporting hardware for military, law-enforcement, scientific and commercial users.

MHI Canada Aerospace is a Mississauga tier-one manufacturer assembling aerospace wing and fuselage structures, installing systems and conducting functional testing.

Space Canada is a national industry association representing Canadian space innovators across satellite communications, Earth observation, robotics, launch, exploration, data services and related advanced technologies.

GB Accelerator is a Collingwood non-profit technology incubator and accelerator providing professional services, training, mentoring and individualized programming to support clean and advanced-technology businesses.

Thius Canada is an Ottawa-area uncrewed-systems company describing vertically integrated design and production across airframes, propulsion, avionics, autonomy and secure communications.