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A Contact is part of the active component of an electric switch. Contacts generally consist of metal buttons or wires that are plated with a good electrical conductor that is also corrosion-resistant, such as gold or silver.

In address books, sales organizations, and electronic organizer devices, a contact is the name, address, phone number, and other pertinent information related to a client, vendor, friend, relative, or other associate. See the vCard and hCard standards for sharing and publishing such contact information.

• In geology, a stratigraphic contact is where strata are divided.
• Contact is a mathematical concept; the idea of curves (for example) touching.
• Contact is the title of a science fiction novel by Carl Sagan.
• Contact is the film adaptation of that novel, starring Jodie Foster and Matthew McConaughey.
• Contact is the name of a dance musical which won the 2000 Tony Award for Best Musical.
• In optics, contacting is a process in which two highly polished surfaces are permanently or temporarily joined without the use of any adhesive.
• Contact can refer to the class before school starts, also known as 'form' or 'homeroom'.
• Some people may call covering adhesive for books contact, especially in Australia.
• Contact Energy is an energy company in New Zealand.
• Contact, in the Culture novels of Iain M. Banks, is the name of the Exploration (and sometimes military) corp of the Culture.

• The term contact is often used to refer to a contact lens.
• In photography, contact paper is used to print negatives without enlargement.
• "Contact" is a term used by pilots just prior to starting the engine that will turn the propeller.

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