Portable building, a manufactured structure that is built off site and moved in upon completion of site and utility work
Portable classroom, a temporary building installed on the grounds of a school to provide additional classroom space where there is a shortage of capacity
Portable toilet, a modern, portable, self-contained outhouse manufactured of molded plastic
In computing:
Portable object (computing), a distributed computing term for an object which can be accessed through a normal method call while possibly residing in memory on another computer