Currency traders typically move into the yen from the dollar and riskier currencies in times of political uncertainty, while investors reduce holdings of stocks and commodities.
"This headline is weighing on risk appetite," said Omer Esiner, chief market analyst at Commonwealth Foreign Exchange in Washington.
The yen was up 1 percent against the dollar at 116.75 yen after hitting 118.66 yen on Dec. 15, which was its weakest since Feb. 2, according to Reuters data.
The Japanese currency was 1.1 percent higher against the euro at 121.88 yen.
The Turkish lira shed 0.8 percent at 3.5338 liras per dollar.
The Russian ruble reversed its losses tied to the Ankara attack and was last up 0.2 percent at 61.897 rubles to the dollar.
Before Monday's attack in Ankara, traders were selling the dollar against the yen on lower U.S. Treasury yields and data that showed Japan's export performance improved strongly in November.
The greenback has rallied since the U.S. election on Nov. 8, underpinned by expectations of tax cuts, federal spending on infrastructure and looser regulations from President-elect Donald Trump.