In this paper, the relative version of 

subparacompactness is studied. We start 

with definitions of relative subparacompactness 

and some examples to show the relationships 

between those definitions. Then we give some 

characterizations of relative subparacompactness. 

Finally, we talk about some basic properties of 

relative subparacompactness and the relationships 

between relative subparacompactness and some other 

known relative topological properties.