I
- identity card
- identity management
- identity proofing
- identity registration
- identity theft
- identity token
- identity verification
- identity-based access control
- ideogram
- ideogram entry
- IDF
- idiom
- idiomatic expression
- IDL
- IDLE
- idle alarm
- idle loop
- idle mode
- idle time
- IDM
- IDN
- IDPS
- IDS
- IDS sensor
- IDT
- IDTM
- IDTV
- IEC
- IEC 61131-3
- IEC 61508
- IEC 62365
- IEC binary prefixes
- IEEE
- IEEE 1284
- IEEE 1394
- IEEE 1451
- IEEE 1471
- IEEE 1588
- IEEE 488
- IEEE 754
- IEEE 802.11
- IEEE 802.11a
- IEEE 802.11ac
- IEEE 802.11b
- IEEE 802.11e
- IEEE 802.11F
- IEEE 802.11g
- IEEE 802.11h
- IEEE 802.11i
- IEEE 802.11n
