Japan's Nikkei 225 closed down by 5.4% while European and US markets are expected to drop when trading resumes on Wednesday. The Hang Seng in Hong Kong is trading 2.9% lower and the Shanghai Composite has lost 0.3%. Australia's ASX 200 finished down 1.9% while the Kospi in South Korea ended 2.7% lower. US stock futures fell sharply with the Dow Jones index expected to lose more than 4% - 800 points when it reopens. London's FTSE 100 index is predicted to lose more than 3%.
Traders had expected a comfortable Hillary Clinton win. Some analysts have associated the shock of a possible Trump victory to the Brexit result earlier this year. However neither markets nor currencies have swung as wildly as they did after June's EU referendum - and many Asian markets saw losses narrow towards the end of Wednesday trading.