Asa Binns was a British mechanical and civil engineer. He trained with hydraulic pump and engine makers before becoming a draughtsman. Binns worked for a period at HMS Chatham Dockyard and rose to become head of their civil engineering works. He later worked on the construction of several major docks in London, including for the Port of London Authority. Binns served as president of the Institution of Engineers-in-Charge (1936–37) and the Institution of Mechanical Engineers (1940). He was elected president of the Institution of Civil Engineers in 1946 but died before he could take office.

The Institution of Mechanical Engineers (IMechE) is an independent professional association and learned society headquartered in London, United Kingdom, that represents mechanical engineers and the engineering profession. With over 120,000 members in 140 countries, working across industries such as railways, automotive, aerospace, manufacturing, energy, biomedical and construction, the Institution is licensed by the Engineering Council to assess candidates for inclusion on its Register of Chartered Engineers, Incorporated Engineers and Engineering Technicians.