ACLU
| Acronym | Definition |
|---|---|
| ACLU | American Civil Liberties Union |
| ACLU | Anti-Christian Litigation Unit |
| ACLU | American College of Life Underwriters (now American College; insurance) |
| ACLU | Afghan Construction & Logistics Unit |
| ACLU | Adult and Community Learning Unit (UK) |
| ACLU | Adventurous Cowboys Living Underwater (Prairie Home Companion) |