Battlefield 2 (aka BF2) is a computer game in which players fight in a modern battlefield using modern weapon systems. Battlefield 2 is a first-person shooter with some strategy and RPG elements. Battlefield 2 was developed by Digital Illusions CE (DICE) with a custom game engine. During development, Trauma Studios contributed to the development of the game after it was acquired by Digital Illusions CE. BF2 is published by Electronic Arts as the third full game of the Battlefield series, released in late June 2005. The first two installments were Battlefield 1942 and Battlefield Vietnam.

BF2 includes a single-player mode with three difficulty levels and multi player mode via the Internet or a LAN. Both player modes use the same maps and use Battlefield's conquest game mode. BF2 single-player mode allows 15 computer controlled players, while Internet mode allows up to 64 players. Players can choose to play 3 factions. Additional factions are playable through the expansion packs of BF2.

A console branded version also exists (for Xbox, Xbox 360 and PS2), named Battlefield 2: Modern Combat. Although they both share the same name, they differ quite considerably in execution, content, and gameplay.