The buggy was being driven by a 25-year-old man in the area of White Horse and Amish roads in Salisbury Township, Lancaster County, around 10:35 p.m.
A green Jeep Grand Cherokee Laredo drove by and a passenger fired either an Airsoft or BB gun at the buggy.
There were no injuries reported to the driver of the buggy or to the horse. The buggy was not damaged.
The investigation into the shooting is ongoing.
Click here to follow Daily Voice Lancaster and receive free news updates.