Indicator
- Complexometric indicator
- Ecological indicator
- Economic indicator
- Environmental indicator
- Health indicator
- Honeyguide
- Humidity indicator card
- Indication (disambiguation)
- Indicator (Deine Lakaien album)
- Indicator (Onward to Olympas album)
- Indicator (distance amplifying instrument)
- Indicator (genus)
- Indicator (metadata)
- Indicator (statistics)
- Indicator Island
- Indicator bacteria
- Indicator diagram
- Indicator function
- Indicator lamp (disambiguation)
- Indicator net
- Indicator of compromise
- Indicator organism
- Indicator plant
- Indicator species
- Indicator value
- Iodine–starch test
- Leigh Hunt
- Macroeconomic indicators
- Performance indicator
- Planet Money
- Redox indicator
- Technical indicator
- Zeta potential