The anchor bend is a knot used for attaching a rope to a ring or similar termination.

Its name originates from the time when "bend" was understood to simply mean "tie to"; today, a bend strictly refers to a knot that joins two lines.

While the knot can become jammed in some modern materials, it is usually easily untied after moderate loads; it can be made more resistant to jamming by taking an extra turn around the object—this will make for a one-diameter longer span of the end to reach around the standing part to be tucked (although in a case of tying to a small shackle or link of a chain, this might not be possible).

The knot is very similar to a round turn and two half hitches except that the first half hitch is passed under the turn.

In many everyday uses, the finishing half-hitch need not be made; alternatively, one might seek surer security by tying off the end with a strangle knot to the standing part.