Supply chain, a coordinated system of organizations, people, activities, information and resources involved in moving a product or service from supplier to customer
Value chain, a management concept first described by Michael Porter
Mathematicsedit
Chain (ordered set), a totally ordered set, usually a subset of a given partially ordered set
Chain crew, crew that manages signal poles in gridiron football
Chain gang, group of prisoners chained together as a form of punishment
Chain letter, a message that attempts to induce the recipient to make a number of copies of the message and then pass them on to one or more new recipients
Chain of events, a number of actions and their effects that are linked together
Chain smoking, practice of smoking several cigarettes/cigars in succession
Chain stitch, in sewing and embroidery, a series of looped stitches that form a chain
Chaining, a technique from applied behavioral analysis for teaching complicated tasks by breaking them into simpler steps
Hudson River Chains, one of several chains used in blockades of the Hudson River