The term reactor may refer to:

• Antimatter reactor, a power source that used antimatter as a fuel
• Bio-reactor, medical technology that could produce viruses
• Dolamide reactor, a power source that used dolamide as a fuel
• Field reactor, an ancient containment field generator
• Fusion reactor, a later version of the nuclear reactor
• Holodeck reactor, power source for starship holodecks
• Impulse reactor, power source for starship impulse drive
• Microfusion reactor, Cardassian power generating device
• Nuclear fission reactor, nuclear power source for vehicles
• Nuclear reactor, nuclear power source
• PXK pergium reactor, a nuclear energy source from the early 23rd century
• Reactor core, power source for Romulan and Cardassian bases
• Tetryon reactor, power source for the Caretaker's array

This is a disambiguation page; that is, one that points to other pages that have the same or a similar name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.