The Abbatija Tad-Dejr hypogeal complex is a paleochristian burial site in Rabat, Malta.

The early catacombs comprised a singular shaft and chamber tombs dug from the vertical face of a quarry.

The presence in the hypogeum of a stone altar and the number of crosses carved into the rock surface suggest early Christian use.

A fresco that, until recently, decorated the apse over the supposed location of the original altar is now housed in the National Museum of Fine Arts.

The catacombs underwent various other phases of use, including as cow pens and for the quarrying of stone used in the production of lime.