Noncontact ultrasonic dispensing of a single droplet is demonstrated for the first time by using a hole on a half-cylindrical reflector. The droplet is found to fall freely through the hole with little influence of residual acoustic field shortly after the vibration is stopped. The maximum diameter of a droplet is measured as a function of the hole diameter, which clarifies that the practical hole diameter is approximately 7 mm in this setup. This value is also confirmed to be suitable from the numerical simulation on the acoustic radiation force acting on the droplet.