Hackle may refer to one of the following.
Hackle, a feather plume attached to a headdress Hackle (wig making), a metal plate with rows of pointed needles used to blend or straighten hair Hackles, erectile plumage or hair in the neck area Heckling (flax), the process of dividing the ribbons of flax fibre into finer parallel filaments ready for drawing and spinning Heckling comb, a tool for heckling flax Hackle (artificial fly), a feather or feathers wrapped around the shank of a fishing hook of an artificial fly for fly fishing