| CAU | Calcification Accretion Unit 
| Others |
| CAU | California Aeronautical University
| Others |
| CAU | Carlos Albizu University
| Others |
| CAU | Carne Agentina Unica
| Others |
| CAU | Carne Argentina Unica
| Others |
| CAU | Caruaru, PE, Brazil
| Others |
| CAU | Caucasian (Other)
| Others |
| CAU | Cell Adapter Unit
| Others |
| CAU | Center for Advanced Urbanism
| Others |
| CAU | Children Assessment Unit
| Others |
| CAU | China Agricultural University
| Others |
| CAU | Christian Albrechts University
| Others |
| CAU | Cisco Aironet Uninstall
| Others |
| CAU | Clark Atlanta University
| Others |
| CAU | Cold Air Unit
| Others |
| CAU | Command Acquisition Unit
| Others |
| CAU | Command Activation Unit
| Others |
| CAU | Commercially Active Universe
| Others |
| CAU | Community Access Unlimited
| Others |
| CAU | Community Affairs Unit
| Others |
| CAU | Community Alternatives Unlimited
| Others |
| CAU | Community Association Underwriters
| Others |
| CAU | Community Axia Utara
| Others |
| CAU | Compliance Assistance Unit
| Others |
| CAU | Computer Aided Using
| Others |
| CAU | Computer Assisted Update
| Others |
| CAU | Control Access Unit
| Others |
| CAU | Controlled Assessed Unit
| Others |
| CAU | Cooling Air Unit
| Others |
| CAU | Crime Analysis Unit
| Others |
| CAU | Cristian Albrechts University
| Others |
| CAU | Cryptographic Auxiliary Unit
| Others |
| CAU | Customer Acquisition Unit
| Others |