- D&I stands for Dad and I
- D&I stands for Design and Implementation
- D&I stands for Development & Implementation
- D&I stands for Diversity and Inclusion
- D&I stands for Discovery and Invention (US Navy)
- D&I stands for Development & Innovation Drop and Insert (telecommunications)
- D&I stands for Direction and Inclination (oil and gas)
- D&I stands for Distress and Inconvenience (legal complaint; UK)
- D&I stands for Dilation and Irrigation
- D&I stands for Disassemble & Inspect
D&I