Antiviral may refer to:

• Antiviral (film), a 2012 body horror film by Brandon Cronenberg
• Antiviral drug, a class of medication used specifically for treating viral infections
• Antiviral protein, produced by cells to inhibit viral replication and spread
• Antivirus software, program designed to prevent, detect, and remove malware from computers
• Antiviral Therapy (journal), a peer-reviewed medical journal covering the clinical development of antiviral drugs and related topics