A leash mount for floating boards has a base and a cap. The base has a seat and a connecting assembly protruding from the seat. The connecting assembly is has a connecting tube and a leash tie hole. The connecting tube has at least one pair of mounting recesses. The pairs of mounting recesses are formed diametrically on the connecting tube. The cap is rotatably mounted detachably in the connecting tube and has multiple bosses. The bosses correspond to and are mounted in the mounting recesses to hold the leash mount securely. Therefore, a leash tie can be mounted on a surfboard through the leash tie hole of the leash mount easily and securely whilst being remolded quickly for cleaning or maintenance.