IVS
- Ideographic Variation Selectors
- Ideographic Variation Sequence
- Indus Valley School of Art and Architecture
- Indus Valley Script
- International Valuation Standards
- International Vedanta Society
- International Viola Society
- International Voluntary Service
- International Voluntary Services
- Intervening sequence
- Interventricular septum
- Intravaginal slingplasty
- NV Ingenieurskantoor voor Scheepsbouw