Abstract This paper is a study of the reflexes of historically interdental consonants in the Neo-Aramaic dialects spoken in the region of Aqra in northern Iraq. These dialects can be classified broadly into those of the villages lying to the north of the Aqra mountain and those of the inhabitants of the region to the south of the mountain. It is shown that there are a wide range of reflexes in the various dialects of this region. Moreover, within individual dialects there is some degree of variation in the reflexes. Most of these can be explained as the result of articulatory phonetic processes. Some of the variations give us insight into the historical layering of the reflexes. There are a few cases of variation that are likely to be the result of dialect mixing.