The term kg is an abbreviation for a kilogram, the SI base unit of mass.

.kg is the Internet country code top-level domain (ccTLD) for Kyrgyzstan. While registrations are normally at the second level, there are some specialized third-level registrations such as those under gov.kg and mil.kg.

The kilogram or kilogramme (SI unit symbol: kg), is the base unit of mass in the International System of Units (SI) (the Metric system) and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK also known as "La Grande K" or "Big K").