Residents accounted for 74.8% of total arrivals at accommodation establishments in January through March, while foreigners made up for the reminder 21.6%.
The vast majority of foreign visitors (95.3%) came from Europe, the data showed.
Romanian tourist departures abroad inched down 1.4% on the year in the first quarter.
In March alone, tourist arrivals increased 17.5% on the year, while overnight accommodations were up 10.2%, the data showed.