Dadda'to (Arabic: دادتو) is a village in Djibouti, located in the region of Obock.

The village wall comprises a surface no larger than 80 m × 60 m, with a dozen houses and a mosque.

When France and Italy first set the boundary between Italian Eritrea and French Somaliland, Dadda'to was used as a term of reference for the latitude at which the horizontal boundary was placed.

The Djibouti–Eritrea boundary has since been changed, but Dadda'to remains on the frontier.

Agriculture is very rare, at the time of fruits and vegetables grown in the hot, desert plants or Aloe Vera.