X-ray sources abound around us. They include the following:
- Natural X-ray sources:
- Astrophysical X-ray source, as viewed in X-ray astronomy
- X-ray background
- Naturally occurring radionuclides
- Artificial X-ray sources
- Radiopharmaceuticals in radiopharmacology
- X-ray tube, a vacuum tube that produces X-rays when current flows through it
- X-ray laser
- X-ray generator, any of various devices using X-ray tubes, lasers, or radioisotopes
- Synchrotron, which produces X-rays as synchrotron radiation
- Cyclotron, which produces X-rays as cyclotron radiation