Xiajin County (Chinese: 夏津县; pinyin: Xiàjīn Xiàn) is a county in the northwest of Shandong Province, China, bordering Hebei to the west.

It is the westernmost county-level division of the prefecture-level city of Dezhou.

Its total size is 882 km2 (341 sq mi), and its population is roughly 500,000.

Its economy is mostly agricultural, including cotton, wheat, and corn.

As 2012, this County is divided to 2 subdistricts, 10 towns and 2 townships.