A Celtic button knot is a stopper knot on a single rope that results in a spherical decorative knot with hair braid / basket weave pattern. It is essentially a single strand Turk's Head Knot that is structured such a way that it is effectively tied around the rope itself, creating a stopper. It typically is used as a button, or as a knot securing the end of the rope from fraying.
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| Celtic button knot | |
|---|---|
 Celtic button knot double pass version, both flat and tightened | |
| Category | Stopper |
| Category 2 | Decorative |
| Related | diamond knot, Chinese button knot |
| ABoK | #545 |