STAR Cryoelectronics, founded in 1999, is a worldwide leading supplier of advanced LTS and HTS dc SQUID sensors, including a broad range of current sensing SQUIDs, integrated magnetometers and vector magnetometers, and planar and axial gradiometers, along with standard and custom cryocables built using bundled twisted pairs or woven twisted-pair looms, and multichannel PC-based dc SQUID readout electronics. STAR Cryoelectronics also offers turn-key, cryogen-free ADR cryostats with cooling to 50 mK for applications in basic research, as well as TES microcalorimeter spectrometers for X-ray microanalysis and STJ spectrometers for synchrotron science applications. In addition, STAR Cryoelectronics offers custom LTS and HTS thin-film design and foundry services for a wide range of superconducting electronics applications, and is the sole producer of the popular Mr. SQUID® Educational Demonstration System in use at many colleges and universities.