Under the Vienna Convention on Diplomatic Relations the expression Persona Non Grata is only used for diplomats, being the expression "not acceptable"
reserved for all other members of the mission (emphasis mine):
- The receiving State may at any time and without having to explain its decision, notify the sending State that the head of the mission or
any member of the diplomatic staff of the mission is persona non grata
or that any other member of the staff of the mission is not
acceptable. In any such case, the sending State shall, as appropriate,
either recall the person concerned or terminate his functions with the
mission. A person may be declared non grata or not acceptable before
arriving in the territory of the receiving State.
That is to say that under this body of legislation "Persona Non Grata" is only for Diplomatic Corps.
Yet the expression has been used and abused in the past by multiple nations. For example Alec Baldwin was considered "Persona Non Grata" by the Philippine government:
On May 20, 2009, American actor Alec Baldwin was declared persona non
grata by the Philippine government after an appearance in an episode
of the Late Show with David Letterman, where he joked about availing a
"Filipino or Russian mail-order bride". Philippine senator and actor
Ramon Revilla Jr. said his (Baldwin's) wife would be "unlucky" and
that "there will be trouble" if Alec Baldwin were to travel to the
Although, as far as I know, there is no legal basis for that expression (PNG) in Philippine law the Philippine Immigration Act can indeed exclude a person unwelcome to the country.
Another example is the the list of people banned from the UK where you'll find some notables such as Edward Snowden.
The Home Office, a United Kingdom government department, has, from
August 2005 to 31 March 2009, excluded 101 individuals from the UK for
having "engaged in unacceptable behaviour". Of those, 22 were excluded
by then Home Secretary Jacqui Smith between 28 October 2008 and 31
March 2009. On 5 May 2009 Smith publicly "named and shamed" 16 of
those individuals.1 In addition to the sixteen, other people are or
have been banned from the United Kingdom.
So even thought the expression is reserved for diplomacy (although I can't guarantee that it does not exist in any other legislative body throughout the world) the practical effects do exist in virtually any nation under one or another different label.
As an extra my example for the Philippines is not completely arbitrary. Its one of those places where the expression "Persona Non Grata" seems to be used almost gratuitously. Should you have the patience read this article.