Ramesses XI (also written Ramses and Rameses) reigns from 1107 BCE to 1078 BCE or 1077 BCE and is the tenth and final king of the Twentieth dynasty of Egypt.

He rules Egypt for at least 29 years although some Egyptologists think he could have ruled for as long as 30 years.

The latter figure would be up to 2 years beyond this king's highest known date of Year 10 of the Whm-Mswt era or Year 28 of his reign.

One scholar, Ad Thijs, has even suggested that Ramesses XI reigned as long as 33 years—such is the degree of uncertainty surrounding the end of his long reign.

He was, perhaps, the son of Ramesses X by Queen Tyti who was a King's Mother.

He marries both Baketwernel a King's Sister, and Tentamun, the daughter of Nebseny, with whom he fathers Henuttawy--the future wife of the high priest Pinedjem I.

It is believed that Ramesses ruled into his Year 29 since a graffito records that the High Priest of Amun Piankhy returned to Thebes from Nubia on III Shemu day 23—or just 3 days into what would have been the start of Ramesses XI's 29th regnal year.

Piankhy is known to have campaigned in Nubia during Year 28 of Ramesses XI's reign (or Year 10 of the Whm Mswt) and would have returned home to Egypt in the following year.