Why is it called the "Persian Gulf"?
The Persian Gulf takes its name from Persia, the civilisation that has bordered its northern shores for over 2,500 years.
Etymology in a nutshell
The name traces back through Latin, Greek, and ancient Persian languages, maintaining remarkable consistency across millennia.
The ancient root word in early Indo-Iranian languages, referring to the Persian people and their homeland. Wikipedia
The Achaemenid Empire called their heartland Pārsa (modern Fars province in Iran). Greeks transliterated this as "Persis," giving us the name "Persia." Wikipedia
Greek historians, including Herodotus, documented the waterway as the "Persian Gulf" when writing about the Achaemenid Empire. Wikipedia
Roman geographers like Pliny the Elder adopted the Greek name, standardising it as "Sinus Persicus" (Persian Gulf) in Latin. Wikipedia
European cartographers and the International Hydrographic Organization maintain this historical name, which appears in UN documents and maps worldwide. Wikipedia