Either of two numbers (see long and short scales for more detail on which languages, regions and periods have used each meaning):

Jack Billion, the 2006 Democratic Party candidate for governor of South Dakota

Golden billion, Russian term for the wealthy people of the developed world.

Billion (company), a modem manufacturer

short scale: 1,000,000,000 (one thousand million; <math>10^{9}</math>; SI prefix giga-)

long scale: 1,000,000,000,000 (one million million; <math>10^{12}</math>; SI prefix tera-)