The previous record low for the leu, against the euro, had been seen in June 2010, at 4.3688 per euro.
Against the US dollar, the leu’s reference weakened to 3.3544 units.
The leu opened at 4.384/4.385 against the euro, compared to 4.381/4.3835 at closing the day before.
At around 13:00 hours (GMT1100), the leu traded at 4.38/4.3808 per euro.
On the money market, overnight rates inched up to 1.65%-2.15% a year, from 1.59%-2.09% on Thursday.