|Names||Fiador knot, Ole fiador knot, Theodore knot, Hackamore diamond knot|
|Related||Bottle sling, Diamond knot|
|Typical use||rope halters, hackamores, and hobbles|
The fiador knot (also Theodore knot) is a decorative, symmetrical knot used in equine applications to create items such as rope halters, hobbles, and components of the fiador on some hackamore designs. As traditionally described, it is a four strand diamond knot in which six of the eight ends loop back into the knot, thus allowing it to be tied with a single line. While a specific knot is discussed in this article, the fiador knot has also been treated as an entire class of multi-strand knots similarly made with a single line.