The Republic of Moldova–Romania border is the international border between Republic of Moldova and Romania, established after the dissolution of the Soviet Union.

It is a fluvial boundary, following the course of the Prut and Danube.

The boundary is 681.3 kilometres (423.3 miles)[1] long, including 570 metres (1,870 ft) along the Danube.

It is part of the external border of the European Union that runs from Criva (48°15′50″N 26°37′30″E / 48.26389°N 26.62500°E / 48.26389; 26.62500) in the north-west to Giurgiulești (45°28′00″N 28°12′50″E / 45.46667°N 28.21389°E / 45.46667; 28.21389) in the south-east.

Opening times vary from crossing to crossing as well as from season to season.