The Gezer calendar is a small limestone tablet with an early Canaanite inscription discovered in 1908 by Irish archaeologist R. A. Stewart Macalister in the ancient city of Gezer, 20 miles west of Jerusalem. It is commonly dated to the 10th century BCE, although the excavation was unstratified and its identification during the excavations was not in a "secure archaeological context", presenting uncertainty around the dating.

The Canaanite and Aramaic inscriptions, also known as Northwest Semitic inscriptions, are the primary extra-Biblical source for understanding of the society and history of the ancient Phoenicians, Hebrews and Arameans. Semitic inscriptions may occur on stone slabs, pottery ostraca, ornaments, and range from simple names to full texts. The older inscriptions form a Canaanite–Aramaic dialect continuum, exemplified by writings which scholars have struggled to fit into either category, such as the Stele of Zakkur and the Deir Alla Inscription.