Russia halted supply of natural gas to Ukraine on Thursday after the two ex-Soviet neighbors failed to agree on payment terms.
The gas flow to Turkey was still continuing via both the West and Blue Stream pipelines which carry daily 40 million cubic meters (mcm) and 35 mcm respectively, the unnamed official told Reuters.
"We aren't expecting any cut. But the necessary measures exist in case we face such a situation," the official was quoted as saying.
Turkey, who supplies more than its 65 percent of its gas demand from Russia, is the second biggest Russian gas buyer from state-run Gazprom after Germany.
The concern of gas importing countries from Russia increases as the dispute grows between Russia and Ukraine.
Europe gets about a fifth of its gas via pipelines through Ukraine. Moscow said these supplies should be unaffected by the cut-off unless Kiev starts illegally diverting the gas. Russia expected to know later in the day whether this was happening.
Energy firms in Germany, France, Poland, Romania, Austria and Italy said on Thursday they had not yet seen any drop in supply.
Europe, where temperatures fell below freezing overnight, has enough gas stockpiled to manage without Russian supply for several days, analysts said.
After both the European Union and the United States urged a quick solution to the row, Ukraine said its negotiators would fly to Moscow to resume talks that broke down on New Year's Eve, but there was no confirmation they had arrived.
