The Kakazai (Pashto: , Urdu, Persian: کاکازَئی / کَکےزَئی / کَکازَئی), also known as Loi or Loye Mamund (Pashto: لوی ماموند; Urdu: لو ئے / لوئی مَاموند), a division of the Mamund clan, are part of the larger Tarkani () tribe who are mainly settled in Bajaur Agency, Pakistan, but originally hailed from the Laghman province of Afghanistan. However, it has grown and scattered around to such an extent that it is recognized as tribe of its own.
The name "Kakazai" means "descendants/offspring/children of Kakae or Kaka" (in Pashto, Kaka or Kakae = a contemporary Afghan name for a male. It is also used for Paternal Uncle.Zai = descendants/offspring/children of, a root also used in other Pashtun tribes such as Yousafzai). Spelling variants include: Kakizi, Kakaezai, Kakezai, Kakaizai, Kakay Zai, Kakayzai, Kakeyzai, Kaka Zai and Kakkayzai.
The Kakazai, along-with other Pashtun tribes, came to South Asia during invasions such as those of Mahmud of Ghazni and Bahlul Lodi, settling in various regions.