The Ayalon Valley, also written Aijalon and Ajalon, is a valley in the lowland of the Shephelah in Israel.

The Shephelah or Shfela, lit. "lowlands", is a transitional region of soft-sloping rolling hills in south-central Israel stretching over 10–15 km (6.2–9.3 mi) between the Judaean Mountains and the Coastal Plain. The different use of the term "Judean Plain", as either defining just the Coastal Plain segment stretching along the Judaean Mountains, or also including, or only referring to, the Shfela, often creates grave confusion.