Bicycle chain, transfers power from the pedals to the drive-wheel of a bicycle thus propelling it
Chain drive, the main feature that differentiated the safety bicycle
Chain gun, type of machine gun that is driven by an external power source, sometimes connected by a chain, to actuate the mechanism rather than using recoil
Chain pumps, type of water pump where an endless chain has positioned on it circular discs
Chain-linked Lewis, lifting device made from two curved steel legs
Chainsaw, portable mechanical, motorized saw using a cutting chain to saw wood.
Chain steam shipping
Curb chain, used on curb bits when riding a horse
Door chain, a type of security chain on a door that makes it possible to open a door from the inside while still making it difficult for someone outside to force their way inside
Keychain, a small chain that connects a small item to a keyring
Lead shank (or "Stud chain"), used on horses that are misbehaving
Lavatory chain, the chain attached to the cistern of an old-fashioned W.C. in which the flushing power is obtained by a gravity feed from above-head height. Although cisterns no longer work like that, the phrase "pull the chain" is still encountered to mean "flush the lavatory".
O-ring chain, a specialized type of roller chain
Roller chain, the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery
Snow chains, used to improve traction in snow
Timing chain, used to transfer rotational position from the crankshaft to the valve and ignition system on an internal combustion engine, typically with a 2:1 speed reduction.
Ball and chain, phrase that can refer to either the actual restraint device that was used to slow down prisoners, or a derogatory description of a person's significant other
Bicycle lock (or "Bicycle Chain"), lockable chain
Security chain, chain with square edges to prevent cutting with bolt-cutters.
High-tensile chain (or "Transport chain"), chain with a high tensile strength used for towing or securing loads.
Leg iron chains (Fetters), an alternative to handcuffs
Chain link fencing, fencing that utilizes vertical wires that are bent in a zig zag fashion and linked to each other
Chain of office, collar or heavy gold chain worn as insignia of office or a mark of fealty in medieval Europe and the United Kingdom
Chain weapon, a medieval weapon made of one or more weights attached to a handle with a chain
Omega chain, a pseudo-chain where the 'links' are mounted on a backing rather than being interlinked
Pull switch, an electrical switch operated by a chain