Taegukgi: The Brotherhood of War (Korean: 태극기 휘날리며; Taegukgi Hwinallimyeo) is a 2004 South Korean wartime action drama film directed by Kang Je-gyu. It stars Jang Dong-gun and Won Bin and tells the story of two brothers who are forcibly drafted into the South Korean army at the outbreak of the Korean War.

Kang Je-gyu made a name for himself directing Shiri and was able to attract top talent and capital to his new project, eventually spending 12.8 million USD on production. The film became one of the biggest successes in the South Korean film history up to that time, attracting 11.74 million people to the theatre, beating the previous record holder Silmido.