Russian Prime Minister Dmitry Medvedev earlier announced the move, effectively raising the price by USD 100 to USD 485 for every 1,000 cubic metres of gas.
Asked about the decision, White House spokesman Jay Carney warned "markets should determine energy prices."
"A country should not use supply and pricing terms as tools of coercion to interfere in Ukraine or anywhere else," he said.
He said Washington was encouraging its allies on Ukraine's western borders to reverse natural gas flows to let the Kiev government access more supplies if needed.
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"No nation should use energy to stymie a people's aspirations," Kerry said.
In another sign of Moscow's pressure on Ukraine, Russian energy giant Gazprom demanded that Ukraine's Naftogaz take immediate steps to pay for previous gas deliveries, valued at over USD 2.2 billion.
Tensions between Moscow and Kiev are running high after a pro-Western government came to power in Kiev following the fall of president Viktor Yanukovych and Russia seized the Crimea peninsula.