- DIIT stands for Deaf Initiative in Information Technology
- DIIT stands for Diabetes Institute for Immunology and Transplantation (University of Minnesota)
- DIIT stands for Digital Invisible Ink Toolkit (software tool)
- DIIT stands for Division of Instructional and Information Technology
- DIIT stands for Daffodil Institute of Information Technology (UK)
- DIIT stands for Drug Incubation Infectivity Test
DIIT