Dadima was a town of Mesopotamia, inhabited during Byzantine times. It became the seat of a Christian bishop; no longer a residential see, it remains a titular see of the Roman Catholic Church.

Its site is located near Tadım in Anatolia.

38°34′21″N 39°10′26″E/38.5726245°N 39.173912°E/ 38.5726245; 39.173912