The euro sank to an 11-year low Monday but Asian equities largely recovered from early losses after an anti-austerity party won Greece's election, throwing its international bailout into doubt and raising fears it could leave the eurozone.
Oil prices resumed their downward trend after rallying on Friday in response to the death of Saudi Arabia's King Abdullah, which fuelled uncertainty in the crude market.
The far-left Syriza party was two seats short of winning an outright majority in Sunday's polls, giving it more bargaining power to take a hard line on rowing back austerity measures.
The group had campaigned on renegotiating the 240-billion-euro European Union-International Monetary Fund bailout that imposed strict spending and taxation rules on Athens.
The possibility of Greece defaulting on its debt repayments is likely to spark renewed fears it could be forced to leave the eurozone.
As the result became clear, party leader Alexis Tsipras told thousands of flag-waving supporters in Athens: "Greece is leaving behind disastrous austerity."
The news hit the single currency in early Asian trade. The euro dived at one point to $1.1088, its lowest level since September 2003, before recovering slightly to $1.1200. That compares with $1.208 Friday in New York.
It was at 132.10 yen compared with 132.03 yen on Friday.
The dollar was at 118.06 yen compared with 117.80 yen in New York.
"Euro selling pressure will continue as Greeks rejected fiscal austerity, heightening the possibility of Greece leaving the currency bloc," Toshiya Yamauchi, a senior analyst in Tokyo at Ueda Harlow Ltd., told Bloomberg News. "Markets are sensitive to risk."
However Elsa Lignos, a senior currency strategist at RBC Capital Markets, said in a note that the chances of Greece leaving the eurozone were limited.
The single currency was already suffering heavy selling after the European Central Bank on Thursday unveiled a bigger-than-expected bond-buying programme aimed at kickstarting the eurozone economy and fighting off deflation.
- Oil prices retreat -
Asian stock markets, which surged Friday in response to the ECB move, mostly sank early Monday. But they bounced back in the afternoon, with some ending in positive territory.
Tokyo fell 0.25 percent, or 43.23 points, to 17,468.52, while Seoul ended marginally lower, dipping 0.41 points to close at 1,935.68.
Shanghai rallied 0.94 percent, or 31.42 points, to 3,383.18 and Hong Kong added 0.24 percent, or 59.45 points to 24,909.90.
Sydney was closed for a public holiday.
On oil markets US benchmark West Texas Intermediate for March delivery was down 76 cents at $44.83 a barrel, and Brent crude for March tumbled 72 cents to $48.07.
Prices initially jumped Friday on news that Saudi Arabia's powerful King Abdullah had died, fuelling uncertainty in the crude market.
However, the Saudi royal family soon moved to show continuity in the country's power structure and policies, dampening hopes of a production cut.
Prices have plunged more than 50 percent since June owing to weak demand and a global supply glut. The fall was exacerbated when OPEC, of which Saudi Arabia is a key member, said it would not cut output.
Gold fetched $1,281.39 an ounce, against $1,294.55 late Friday.
In other markets:
-- Bangkok dropped 0.63 percent, or 10.02 points, to 1,588.31.
Bank of Ayudhya plunged 13.81 percent to 78.00 baht, while telecoms company True Corporation gained 5.47 percent to 13.50 baht.
-- Jakarta ended 1.20 percent, or 63.86 points, lower at 5,260.02.
Palm oil producer Astra Agro Lestari lost 1.98 percent to 23,525 rupiah, and car maker Astra International fell 0.62 percent to 8,025 rupiah.
-- Singapore closed down 0.38 percent, or 12.98 points, at 3,398.52.
Oil rig maker Keppel Corp rose 0.74 percent to Sg$8.16 while DBS Bank dipped 1.14 percent to Sg$19.93.
-- Taipei was slightly higher, edging up 6.73 points to Tw$9,477.67.
Taiwan Semiconductor Manufacturing Co was unchanged at Tw$145.0 while Hon Hai Precision Industry rose 1.14 percent to Tw$88.8.
-- Wellington gained 0.41 percent, or 23.42 points, to 5,698.65.
Spark added 3.56 percent to NZ$3.345 while Fletcher Building was up 0.48 percent at NZ$8.35.
-- Manila closed 0.50 percent, or 37.74 points, higher at 7,586.67.
JG Summit rose 0.47 percent to 64.05 pesos, Universal Robina gained 0.89 percent to 203.8 pesos and Philippine Long Distance Telephone was up 0.68 percent at 2,982 pesos.
-- Mumbai was closed for a public holiday.