ISO 28000
ISO 9660
ISO 14000 family
ISO/IEC 17025
Graphical Kernel System
ISO 15924
ISO 1745
ISO week date
Midcontinent Independent System Operator
PHIGS
Spatial reference system
California Independent System Operator
Regional transmission organization (North America)
Real-time locating system
FDI World Dental Federation notation
Romanization of Georgian
IS-IS
OSI model
International Standard Audiovisual Number
Universal Disk Format
Open-system environment reference model
Kunrei-shiki romanization
Geography Markup Language
Recreational diver training
Pascal (programming language)
International System of Units
SUCRE
Net energy gain
ISSN
Nihon-shiki romanization
Digital object identifier
Multibus
POSIX
ANSI escape code
Pinyin
Tire code
Romanian leu
File Allocation Table
Japanese writing system
Vai syllabary
Mesoamerican writing systems
Elevator
Moon type
Klingon scripts
Maya script
Pound sterling
Indus script
Middle Chinese
Braille
Geʽez script
Moksha language
Basque language
Soviet ruble
Ossetian language
Phoenician alphabet
Aragonese language
Georgian scripts
List of sign languages
Comoros
Vietnamese language
Korean language
Meitei script
Brazil
Brunei
Rejang alphabet
Lebanon
Fat removal procedures
British Indian Ocean Territory
Mexico City