| Acronym | Definition |
|---|
| IPDI➣Isophorone Diisocyanate |
| IPDI➣Institute for Politics, Democracy and the Internet (George Washington University) |
| IPDI➣Innovative Perpetual Debt Instrument (India) |
| IPDI➣Immediate Post Death Interests (taxes; UK) |
| IPDI➣Institute for Pension and Disability Insurance (Slovenia) |
| IPDI➣Implicit Price Deflator Index |