The Aussie, the Chilean peso, and South Africa's rand, all of which are usually correlated to the prices of iron, copper and other raw materials.
The Chilean peso fell to near five-year lows on a deepening sell-off in copper in Asian trading. Chile, a major copper exporter, saw its currency last traded at down 0.3 percent versus the dollar at 572 pesos, adding to its month-to-date loss to 2.6 percent.
The Aussie was down 0.1 percent, while the rand shed 0.2 percent.
Copper prices in Shanghai fell five percent overnight. London prices were close to their lowest in more than three years.
A fourth day of losses in copper compounded investors' anxiety underpinned by the ongoing tension in Ukraine.
Dealers said the ruble was propped up by central bank support as Russian stock indexes fell again on Wednesday, reacting to the growing chance of western sanctions over Crimea.
The ruble was largely flat against the dollar near 36 rubles, within striking distance of the record low just under 36.68 set on March 3 after Putin moved troops into the Crimea.
Concerns about China and Ukraine has been a net positive for the yen, a safe haven in times of economic stress, but had little visible impact on the other major currencies.
The yen, steadier so far this year after losing a fifth of its value against the dollar in 2013, was holding strong in early U.S. trading, up 0.3 percent against the dollar at 102.75 yen. It was up nearly 0.1 percent against the euro at 142.675 yen.
The Swiss franc, another safe haven currency, strengthened about 0.3 percent against the dollar and around 0.1 percent versus the euro near 0.88 franc and 1.22 franc, respectively.
Chinese industrial output, investment and retail sales figures are all due at 0530 GMT on Thursday.
Kiwi dips before rate decision
Ahead of a widely expected rise in New Zealand interest rates on Thursday, the New Zealand dollar dipped, last traded down about 0.1 percent near 0.85 to the greenback.
The Reserve Bank of New Zealand was expected to lift interest rates and to map out a path for a series of increases over the next two years at least, a Reuters poll shows, taking the lead among developed economies in tightening policy.
Markets have priced in a 98 percent chance the Reserve Bank of New Zealand will raise its policy rate by 25 basis points to 2.75 percent after holding it at a record low for three years.
On Tuesday, the kiwi hit its highest level since flotation against a currency basket in 1985. On a trade-weighted basis, it rose as high as 79.68, according to Reuters data.
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