The United Nations group said very few countries have been able to record double-digit growth in tourism this year.
But Vietnam grew 36 percent, just after Sri Lanka, Arab Saudi and Israel.
Vietnam had attracted 1.8 million visitors by the end of April, up 35 percent year-on-year, including 432,600 last month for a 31.3 percent increase over April last year, according to the National Administration of Tourism.
Malaysia’ minister of tourism Ng Yen Yen was recently quoted by the country’s Star Online as saying Vietnam and Cambodia are emerging as fearsome tourism opponents in Asia.
The World Tourism Organization ranked Malaysia ninth among the countries attracting the most visitors in 2009.
France topped the list.