Iyasu ( Ge'ez: ኢያሱ) is an Ethiopian name meaning Joshua. It can also mean Yasu (or Yashu), Yesu, or Jesu.
Various Ethiopian Emperors have used the name including:
- Iyasu I of Ethiopia (also known as the Great) (1682 - 1706)
- Iyasu II of Ethiopia (1730 – 1755)
- Iyasu III of Ethiopia (1784 – 1788)
- Iyasu IV of Ethiopia (1830 - 1832)
- Iyasu V of Ethiopia (1913 - 1916) (uncrowned and excommunicated by the Ethiopian Orthodox Tewahedo Church, not referred to publicly as Iyasu V)
Yeshaq Iyasu claimed the title nəgusä nägäst (1685) of Ethiopia, opponent of Iyasu I.
Girma Yohannis Iyasu (1961 - Present) - Iyasuist claimant to the abolished throne of Ethiopia.
Atse Iyasu - was proclaimed nəgusä nägäst (1787 – 1788) of Ethiopia in Tigray and Gojjam by enemies of Ras Ali I of Yejju.