This practice note provides an overview of medium-term note (MTN) programs. Companies, particularly large, well-established companies, use MTN programs to offer debt securities, primarily to large institutional investors on a regular or continuous basis. This practice note discusses the types of offerings conducted and securities issued in MTN programs, including traditional, asset-backed, and structured securities, and the credit support underlying such issuances. It also describes issuance mechanics, including setting the terms, posting and selling MTNs, and typical settlement procedures. The practice note concludes with a summary discussion of the advantages the MTN structure offers over conventional corporate debt offerings.