曼涅托（希腊语：Μανέθων，或Μανέθως；拉丁化：Manetho，或Manethon，活动时期公元前四世纪末—公元前三世纪初），亦称曼内托。古埃及祭司和历史学家，用希腊文写成《埃及史》一书，该书有片段为教会历史学家保存下来，成为今人研究古埃及历史的重要史料。曼涅托把埃及历史划分为30个王朝和古王国、中王国、新王国三个时期，这种分期法有一定的准确性，至今仍为学术界所沿用。

Manetho (/ˈmænᵻθoʊ/; Greek: Μανέθων, Manethōn, or Μανέθως, Manethōs) was an Egyptian historian and priest from Sebennytos (ancient Egyptian: Tjebnutjer) who lived during the Ptolemaic era, approximately during the 3rd century BC.

Manetho wrote the Aegyptiaca (History of Egypt). His work is of great interest to Egyptologists, and is often used as evidence for the chronology of the reigns of pharaohs. The earliest and only surviving reference to Manetho's Aegyptiaca is that of the Jewish historian Josephus in his work Against Apion.