7 Billion

7 billion or Seven billion may refer to:
 * 7 Billion Actions, A campaign to commemorate the world's population reaching 7 billion
 * 7 Billion Needles, A Japanese manga
 * 7 Billion Others, A video series by Yann Arthus-Bertrand
 * Day of Seven Billion, the day when the world's population reached 7 billion