In the recent survey, jointly conducted by KITA and the Korea Chamber of Commerce in the US, 72 percent of those surveyed said they expected difficulties for their business and investment in the world's largest economy due to a rise in uncertainties following the election and inauguration of US President Donald Trump.

Only 11 percent of 250 respondents said they were not facing any additional problems, KITA said in a press release.

Most of the South Korean firms expressed concerns over the Trump administration's protectionist trade policies, with 82 percent of those surveyed saying Washington's new customs and import restrictions will likely have an adverse effect on their business.

A majority of respondents also expressed concerns over the proposed border adjustment tax and the US move to renegotiate or even scrap the North American Free Trade Agreement.

The new US administration's economic policies, on the other hand, are widely expected to benefit businesses based in the US, the survey showed.

More than half, or 58 percent of those surveyed, said eased business regulations will have a positive effect on the economy, while 72 percent of respondents singled out corporate and income tax reductions as the most positive development for US-based firms.

"Many are fearing a negative impact from a rise in uncertainties caused by a change in US policy under the Trump administration. Still, the companies are advised to rather turn it into an opportunity to grow by actively adapting to new changes, KITA said. (Yonhap)