A binding machine includes a wire feeding unit configured to feed two wires to be wound on an object to be bound, a wire guide configured to align the two wires in parallel, a binding unit having an engaging member in which the wires are to be engaged, and the binding unit configured to twist the wires which are wound on the object to be bound and which are engaged in the engaging member, a curl guide configured to curl the wires being fed by the wire feeding unit into a loop shape, an inductive guide configured to guide the wires curled by the curl guide toward the binding unit, and a parallel alignment regulation part configured to guide an alignment direction of the two wires to be engaged with the engaging member in a radial direction of the loop.