Ramesses II (/ˈræməsiːz, ˈræmsiːz, ˈræmziːz/; Ancient Egyptian: rꜥ-ms-sw, Rīꜥa-masē-sə, Ancient Egyptian pronunciation: [ɾiːʕamaˈseːsə]; c. 1303 BC – 1213 BC), commonly known as Ramesses the Great, was the third pharaoh of the Nineteenth Dynasty of Egypt. Along with Thutmose III of the Eighteenth Dynasty, he is often regarded as the greatest, most celebrated, and most powerful pharaoh of the New Kingdom, which itself was the most powerful period of ancient Egypt. He is also widely considered one of ancient Egypt's most successful warrior pharaohs, conducting no fewer than 15 military campaigns, all resulting in victories, excluding the Battle of Kadesh, which is generally considered a stalemate. His 66-year rule was also the longest recorded reign of any pharaoh (and one of the longest in history), possibly alongside Pepi II, who lived 1000 years earlier and is said to have reigned for 90 years.
In ancient Greek sources, he is called Ozymandias, derived from the first part of his Egyptian-language regnal name: Usermaatre Setepenre. Ramesses was also referred to as the "Great Ancestor" by successor pharaohs.