CTD may refer to:
Medicine Carnitine transporter deficiency, an inborn error of fatty acid transport Cumulative trauma disorders, another common name for Repetitive Strain Injury 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
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
Other CBS Television Distribution Central de Trabajadores Democráticos, a trade union centre in El Salvador Counter Terrorism Department (Pakistan), Pakistani agency for counter terrorism FBI Counterterrorism Division, the United States Federal Bureau of Investigation's anti-terrorism division Crash to desktop, a kind of computer crash Cummins Turbo Diesel, acronym for an engine genre
See also Circle the Drain