A fence post sleeve designed to allow the quick and easy erection of a temporary fencing structure without the use of installation tools. The fence post sleeve is a generally tubular structure having at least two barrier fence clips and a longitudinal slit. The fence post sleeve is designed to cooperate with a number of common fence posts. The barrier fence clips releasably secure flexible barrier fencing to the fence post sleeve, and thus the fence post. The fence post sleeve is particularly useful in the installation of construction fencing and other forms of temporary barrier fencing.