The Association of Scientific, Technical and Managerial Staffs (ASTMS) was a British trade union which existed between 1969 and 1988.

ASSET, the larger of the two unions, began as the National Foremen's Association and chiefly represented supervisors in metal working and transport.

Covering both the public and private sectors, AScW largely represented laboratory and technical workers in universities, the National Health Service and in chemical and metal manufacturing.

With advertising and personal appearances on television he kept ASTMS in the public's eye, within 15 years the union had expanded from 65,000 members to a figure approaching 500,000.

In 1976, trade union activist Sheila McKechnie was appointed as the full-time Health and Safety Director of ASTMS.