Syrian Desert, an arid wasteland in the Middle East. It lies just north of the Arabian Peninsula and south of the so-called Fertile Crescent, occupying parts of Syria, Jordan, Saudi Arabia, and Iraq. The desert is roughly triangular in shape and reaches its greatest width, about 600 miles (970 km), along the base in the south.

Most of the land consists of relatively flat, stony, and sandy plains that have little or no vegetation. There are also scattered salt flats, a few dunes, several low mountain ranges, and large tracts of rough, barren lava. Infrequent brief rains sustain meager grazing lands for the herds of the nomadic Bedouins. Several roads and petroleum pipelines cross the desert.