- ice (precipitation)
- ice bucket (table accessory)
- ice hockey
- ice skating
- iceberg / ice floe
- iconography
- identification / authentication
- Identification technology
- identity
- Idiophone
- idyll (subject)
- igloo
- Igniter
- Ikebana (object) / flower arrangement
- ikebana (technique)
- illicit trade
- illiteracy
- illustrated book
- illustration
- image (product feature)
- Image agency / Photo agency
- immigration
- immunization
- imperialism
- impregnant (textile care)
- impregnate (textile finishing)
- Impressionism
- imprisoned person
- imprisonment / detention
- improvisation (culture)
- improvisational theater
- Incunabulum
- index / list (document)
- Indexing / Registration
- indicator light (living)
- Indigenous Peoples
- indisposition
- individual
- individualism
- industrial accident / work accident
- industrial action / strike
- industrial building
- industrial design
- industrial plant (building)
- industrial production (production type)
- industry (commercial sector)
- industry (subject / genre)
- infectious disease
- inflatability (product feature)
- inflorescence (plant)
- influenza
- information / communication
- information / information medium
- information design
- information panel / sign
- information science
- infusion beverage
- injection / infusion (medicine)
- injury / wound
- inkjet printing (printing technology)
- inmate / prisoner
- inner city / town center
- inscription
- insect repellent (housekeeping)
- insecticide (plant cultivation)
- insigne
- installation (fine arts)
- instant meal / convenience food
- instructions
- instrument making (trade)
- instrumentation (music theory)
- insulation (finishings)
- insurance (museum)
- insurance industry
- integration (migration)
- Intensive-care medicine (specialist field)
- interaction (sociology)
- interaction design
- interactivity (human-computer)
- Intercom
- interdisciplinarity (research)
- interface design
- interior decoration (economic sector)
- interior design
- interior design
- interior design / interior
- international match / championship
- international politics
- International Worker's Day
- internet
- internet access / internet connection
- internship / practical training
- interview (journalism)
- intimacy
- intuition
- invention
- invertebrate
- investment (finance)
- invoicing
- Iraq war (2003)
- iron (electrical)
- iron (mechanical)
- ironing
- ironing board
- irrigation / watering (plant cultivation)
- Islam
- island
- itching