Kubaba (also Ku-Baba, 𒆬𒀭𒁀𒌑) was a queen of Kish (c. 2500 BCE) — the **only woman listed on the Sumerian King List** as a sovereign monarch, and thus the first historically documented female ruler in human history. The Sumerian King List records her as a former tavern-keeper who founded a dynasty.
Rare but iconic in ancient Near Eastern studies.
Kubaba reduces to one — the number of first queen.