Slovenian Q3 GDP growth slows although exports jump

* Q3 GDP up 4.5 pct y/y

* Q3 exports up 12 pct y/y

* Nov inflation 1.4 pct y/y

LJUBLJANA, Nov 30 (Reuters) - Slovenia's gross domestic product (GDP) quarterly growth slowed to one percent in the third quarter of 2017 from 1.2 percent in the second, the statistics office said on Thursday.

Year-on-year growth reached 4.5 percent in the third quarter, down from 4.6 percent in the second, it said, adding exports jumped by 12 percent year-on-year versus 8.6 percent in the second quarter.

Gross investment rose by 1.9 percent versus 7.5 percent in the previous quarter which analysts said could partly be attributed to the fact that companies have less stock because of high demand for their products from abroad.

"I believe companies have problems with managing their stock because of high demand ... but I expect full-year economic growth will still be high at some 4.5 percent," Igor Masten, a professor at Ljubljana's Faculty of Economy, told Reuters.

The Organisation for Economic Cooperation and Development on Wednesday forecast Slovenia's GDP growth this year at 4.9 percent, but Iztok Trobec from the treasury department of Dezelna Banka said this seems unrealistic.

"GDP growth is slowing down which shows that its peak may have already been reached. I expect growth next year will be slower than in 2017 but will still remain relatively strong," Trobec said.

The government sees GDP growth at 4.4 percent this year and 3.9 percent in 2018, up from 3.1 percent last year.

Slovenia exports over 60 percent of its production, mainly to other European Union states. Main exports include cars, car parts, pharmaceuticals and household appliances.

The statistics office also said the number of foreign tourists jumped by 16.9 percent in the first 10 months of the year while November inflation rose to 1.4 percent year-on-year versus 1.3 percent a month before.

Slovenia, which narrowly avoided an international bailout for its banks in 2013, returned to growth a year later and has since managed to strongly increase exports and cut unemployment.

The statistics office also said on Thursday the unemployment rate in the third quarter fell to 6.3 percent versus 7.3 percent in the same quarter of 2016. (Reporting By Marja Novak, Editing by William Maclean)