There are multiple definitions - click on the translation that matches your context.

lokator

rzeczownik

full

occupier

noun

Definitions of occupier

a member of a group that takes control of a building, area, or country etc by force

Some reject the plan because they consider it to be a deal with an illegal occupier, granting legitimacy to a breakaway state.

a person or company who lives in or uses a property as its owner or tenant, or who lives in or uses a property illegally as a squatter

This Occupancy Agreement confirms that you will be the occupier of the accommodation provided by Vodafone.