Ceylon was the old name of which country:

The correct answer is Sri Lanka. Ceylon was the official name of the island nation now known as Sri Lanka, a name it held during British colonial rule and for several decades after independence.

From Ceylon to Sri Lanka

• Colonial Legacy: The Portuguese, Dutch, and finally the British controlled the island from the 16th century onward. The British unified the territory and named it Ceylon, which remained the official name when it gained independence as a dominion in 1948.
• Becoming Sri Lanka: In 1972, a new constitution transformed Ceylon into the Republic of Sri Lanka, adopting the Sinhala name "Sri Lanka" to reflect the country's indigenous heritage and move away from colonial-era nomenclature. "Sri Lanka" means "resplendent island."
• Famous Ceylon Tea: The name "Ceylon" is still commercially famous for the country's premium tea. "Ceylon Tea" remains a globally recognized brand, often using the old name to denote quality.
• Why Not the Others?: Myanmar was formerly Burma, Maldives has never been called Ceylon, and Singapore was part of British Malaya. Only Sri Lanka bears the historical name Ceylon.

Therefore, Ceylon is the old name of Sri Lanka.