Ur-Nanshe (or Ur-Nina) was the first king of the First Dynasty of Lagash (approx. 2500 BCE) in the Sumerian Early Dynastic Period III. He is known through inscriptions to have commissioned many buildings projects, including canals and temples, in the state of Lagash, and defending Lagash from its rival state Umma. He was probably not from royal lineage, being the son of Gunidu who was recorded without an accompanying royal title. He was the father of Akurgal, who succeeded him, and grandfather of Eanatum. Eanatum expanded the kingdom of Lagash by defeating Umma as illustrated in the Stele of the Vultures and continue building and renovation of Ur-Nanshe’s original buildings.
He ascended after Lugal-shag-engur (lugal-šag4-engur), who was the ensi, or high priest.
Waddell refers to him as Uruash.
According to the Perforated Relief of King Ur-Nanshe, temples attributed to Ur-Nanshe include Ningirsu's temple in Girsu, Nanshe's temple in Nina, and Apsubanda. He is known to have originally built the Ibgal of Inanna, because of Eanatum's honorary inscriptions left after temple renovation. The Ibgal of Inanna is located in modern day al-Hiba (ancient city of Lagash). An oval wall surrounds the main mud brick temple and it is located on the southwest edge of the city. This placement within the city is different because temples were usually centrally positioned in ancient Sumer.
Ur-Nanshe has left behind many inscriptions and plates that depict him, his family, and court.
The Perforated Relief of King Ur-Nanshe is on display at the Louvre. The king is portrayed as a builder of temples and canals, thus a preserver of order perceived to be bestowed upon them by the gods. It is a perforated limestone slab that was probably part of a wall as a votive decoration and is inscribed in Sumerian: “Ur-Nanshe, king of Lagash, son of Gunidu, built the temple of Ningirsu; he built the temple of Nanshe; he built Apsubanda.”
The carved illustration is in two registers, top and bottom, both depicting Ur-Nanshe in different roles as king. In the top register he is dressed in a kaunakes (tufted wool skirt), carrying a basket of bricks on his head while surrounded by other Lagash elite, his wife, and sons. Inscriptions on their respective garments identify each person. On the bottom register, Ur-Nanshe is at a banquet, which is to celebrate the building of the temple. He is seated on a throne wearing the same outfit as the top register surrounded by other court members. In both registers Ur-Nanshe is shown using hierarchical proportion in which he is considerably larger than everyone surrounding him.