To provide a small yarn feeder capable of stably and surely making yarn travel in a spiral shape, and capable of preventing a yarn cut and fluff caused by being bent by a guide pin.

Guide members 16 and 17 are formed of two bar-shaped guide pins 16a, 16b, 17a, and 17b arranged in the circumferential direction of hubs 12 and 13. An outer peripheral surface of the respective guide pins is inscribed in a circular arc 21 set in an angle width α causing no interference of the adjacent first and second guide members 16 and 17, and having a radius of curvature (r) smaller than a reference circle inscribed in a reference circle 20 with the axis of the hubs 12 and 13 as the center.