Sirius Systems Technology was a manufacturer of personal computers in Scotts Valley, California. It was founded in 1980 by Chuck Peddle and Chris Fish, formerly of MOS Technology and capitalized by Walter Kidde Inc.

In late 1982, Sirius acquired Victor Business Systems (known for its calculators and cash registers) from Kidde and changed its name to Victor Technologies. It made the Victor/Sirius series of personal computers. The company made a public offering in the first half of 1983, but went under Chapter 11 bankruptcy protection before the end of 1984.