The term Chain (sequence) may refer to:

• Chain in chemistry
• Chain sequence (continued fraction), numbers in the mathematical study of continued fractions
• Chain of thought, continuous thought process where ideas follow one from the other
• Chain smoking, the habit of smoking continuously
• Chain stitch, in sewing and embroidery, a series of looped stitches that form a chain
• Chain letter, 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, Planetary, a chain of globes serving as fields of evolution in theosophical cosmology
• Crater chain, a line of craters on the surface of an astronomical body
• Daisy chain, originally a garland of flowers, with additional uses in the fields of electronic engineering, computer software, rock climbing, backpacking, fishing, the military, and human relations
• Human chain, a form of protest
• Signifying chain, in semiotics, an interlocking system of signifiers
• Hudson River Chain, one of several chains used in blockades of the Hudson River

Chain may also refer to:

• Archipelago, a chain of islands
• Mountain range, a chain of hills or mountains

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.