Avalon Systems is an Australian company of professional engineers specialising in the field of Electronic Warfare (EW). The company's main areas of business are the:

• Design and manufacture of signal processing sub-systems for use by the ADF and EW systems houses;
• Australian Industry Involvement on major EW acquisition programs; and
• Provision of engineering consultancy services to the Australian Defence Forces (ADF), Defence Science and Technology Organisation (DSTO) and industry

The company was founded by its principals in 1995 on the basis of their 20 year involvement in the EW field and roles that have included project management, proposals development, system and sub-system design, test and trials, and equipment procurement.

Avalon Systems is 100% Australian, owned by its employees and independent. The company is located at Technology Park, just north of Adelaide, South Australia. The company's Quality Management System has been certified to AS/NZS ISO 9001:2000.