Shadowgraphy may refer to:

• Shadowgraphy (performing art), using hand shadows
• Shadow play or shadow puppetry, performing art using cut-out figures
• Radiography, the use of X-rays
• Shadowgraph or shadowgram, an optical method that reveals non-uniformities in transparent media
• Optical comparator, a device that creates silhouettes of manufactured parts for inspection
• Shadowgraph, an electromagnetic and optical device once used as an alternative to magic eye tube