Pharaoh was a title of the monarch of ancient Egypt used from the Eighteenth Dynasty onwards. The title was subsequently added to all the previous kings of Egypt. Before this Pharaoh was a term that meant more of the kings' administration. The earliest confirmed instance of the title used contemporaneously for a ruler is a letter to Akhenaten (reigned c. 1353–1336 BCE), possibly preceded by an inscription referring to Thutmose III (c. 1479–1425 BCE). Although the title only came into use in the Eighteenth Dynasty during the New Kingdom, scholars today use it for all the rulers of Egypt from the First Dynasty (c. 3150 BCE) until the annexation of Egypt by the Roman Republic in 30 BCE.
In the early dynasties, ancient Egyptian kings had as many as three titles: the Horus, the Sedge and Bee (nswt-bjtj), and the Two Ladies or Nebty (nbtj) name. The Golden Horus and the nomen titles were added later.