The Korea Composite Stock Price Index (KOSPI) shed 0.31 percent to close at 1,925.69, wrapping up the trading week with a 1.3 percent gain from last Friday.
The South Korean won was a shade lower against the dollar as the greenback found support from upbeat U.S economic data, although falls were limited following the Ebola scare in New York City.
The local currency was quoted at 1,057.5 to the dollar at the conclusion of onshore trade, compared with Thursday's close of 1,056.1.