CACAO is a research Java Virtual Machine developed at Vienna University of Technology. It compiles the class binaries while running (no interpreter), resulting in faster execution. It is an academic project, originally developed by students doing practical training or diploma theses on specific topics.

Cacao may refer to:

• Theobroma cacao, or cocoa tree
  • Cocoa bean, from the tree
• Cacao, French Guiana
• Cacao, Puerto Rico
• CACAO, computer software related to the Java language
• Maria Cacao, a mountain goddess in Philippines