Caves Valley Historic District is a national historic district near Owings Mills, Baltimore County, Maryland, United States. It is located in a natural upland valley encompassing about 2,100 acres (8.5 km) along the North Branch of the Jones Falls and its contributing courses. It includes cultivated fields, pastures, woodlands, streams, housing clusters, and agricultural structures. The vernacular buildings are log, stone, and frame, reflecting the local materials and functional plans of rural locations in the 18th and 19th centuries.

It was added to the National Register of Historic Places in 1988.

The Irvine Nature Center moved from its original location in Stevenson to a property here in 2008.

• Caves Valley Historic District, Baltimore County, including photo dated 2004, at Maryland Historical Trust
• Boundary Map of the Caves Valley Historic District, Baltimore County, at Maryland Historical Trust
• Historic American Buildings Survey (HABS) No. MD-994, "Blendon Estate, 11747 Park Heights Avenue, Owings Mills vicinity, Baltimore County, MD", 1 photo, 10 data pages, 1 photo caption page
• HABS No. MD-994-A, "Blendon Estate, Tenant House", 11 photos, 12 data pages, 2 photo caption pages
• HABS No. MD-994-B, "Blendon Estate, Barn", 16 photos, 12 data pages, 2 photo caption pages