Biotron Limited, a biotechnology company, engages in developing and commercializing small molecule products to treat various viral diseases in Australia. The company's lead antiviral drug is BIT225 for the treatment of SARS-CoV-2, HIV-1, hepatitis C virus, hepatitis B virus (HBV), influenza, and dengue virus infections. The company was incorporated in 1999 and is based in Sydney, Australia.