Sure there are . Cia tried to get rid of one with a fake porn tape . One official name
There are multiple places in the world where it is common . It is sometimes a dilemma for those who publish.
I saw one author talk about how he is known as Anthony of Marcus or something like that
I saw one Javanese person talk about she only has one name and immigration always questions it
Btw, the reason I know this is because I ran into a guy from the Burmese area. No last name. He spoke Burmese Chin.
I couldn’t understand him well enough to know what accomodations he made in US for drivers license so I didn’t ask. Next time I see him I am going to ask.