CTD may refer to: Medicine Carnitine transporter deficiency, an inborn error of fatty acid transport Comparative Toxicogenomics Database, an online research tool describing chemical-gene-disease interactions CTD (chemotherapy), a combination of the drugs cyclophosphamide, thalidomide, and dexamethasone Common Technical Document, an internationally agreed format for drug approvals Connective tissue disease Circling the Drain, acronym relating to those on the way out Music Crash Test Dummies, a Canadian rock band from Winnipeg, Manitoba Science Comparative Toxicogenomics Database, an online research tool describing chemical-gene-disease interactions CTD (instrument), in oceanography, used to determine conductivity, temperature, and depth Carboxy-Terminal Domain, the end of an amino acid chain which has specialized functions in some proteins Church–Turing–Deutsch principle, in computer science, relates to the universality of simulation IT (Information Technology) Crash to desktop Continuous Threat Detection Other CBS Television Distribution Central de Trabajadores Democráticos, a trade union centre in El Salvador Continued, a word Counter Terrorism Department, Pakistani agency for counter terrorism FBI Counterterrorism Division, the United States Federal Bureau of Investigation's anti-terrorism division Cummins Turbo Diesel, acronym for an engine genre