Romanian traditional clothing refers to the national costume worn by Romanians, who live primarily in Romania and Moldova, with smaller communities in Ukraine and Serbia. Today, the vast majority of Romanians wear modern-style dress on most occasions, and the garments described here largely fell out of use during the 20th century. However, they can still be seen in more remote areas, on special occasions, and at ethnographic and folk events. Each historical region has its own specific variety of costumes.

Romanian traditional clothing can be classified according to seven traditional regions. These can be further subdivided by ethnographic zones, which may range between 40 and 120, depending on the criteria used.

The seven main traditional regions are:

The Romanian popular costume finds its roots in the part of Thracian, Dacian and Getae ancestors and resembles that of the peoples of the Balkan Peninsula, of course with differences consisting of decorative and colourful details. For example, women's portraits carved on Trajan's Column in Rome after the Dacian Wars provide information about their clothing. Dacian women wore shirts rippled at the neck. Sleeves were either long and wide or short. The dress was long to the ground, over which sometimes was attached a wide draped mantle. In the feet, they wore leather sandals in summer and fur sandals in winter.

Portraits of the founders provide important information about the type of material of which were made the pieces of the port and about elements of tailoring, decor and chromatics. Between the eighteenth and nineteenth centuries, votive paintings on the walls of churches reserved for the country's rulers and nobility hypostasiate a wider range of donors. As a result, in the sub-Carpathian areas of Oltenia (especially in Gorj) appear portraits of free peasants, freeholders and yeomen.

But representations of peasant port date from the fourteenth century. In Codex Latinus Parisinus, written during 1395–1396 by Paulus Sanctinus Ducensis, a military engineer of King Sigismund of Luxembourg, besides portraits of knights and footmen appear described ancillaries of the army: craftsmen, cartmen, and fishermen. In Chronicon Pictum Vindobonense are portrayed men in white shirts and trousers (Romanian: cioareci). Over they wore shaggy Romanian: sarici with long sleeves and left on back. They wore simple leather shoes (Romanian: opinci). In a simple comparative analysis, it can be grasped that these elements are always present in the port of remote shepherds. Diaries of foreign travellers, particularly those of Antonio Maria Del Chiaro Fiorentino (secretary of Italian language of Constantin Brâncoveanu) and officer Friedrich Schwanz von Springfels contain rich information about the garments of Romanians: ladies, patronesses and peasant women wore identically tailored shirts, distinct being only the methods used for decoration. ^{[citation needed]}

Boyar shirts were of silk, embroidered with gold thread and decorated with pearls. The costume of Oltenia peasant women was composed of cotton shirts sewn with altițe, striped catrințe and bete. Like them, patronesses wore headlong handkerchiefs (Romanian: maramă) of floss silk or flax, that hung on the back.

In the context of building the national conscience, beginning with the mid-19th century there was a process of standardization and idealization of the Romanian port, in order to distinguish it from surrounding ethnic groups.