Borf is the name of a graffiti campaign seen in and around Washington, D.C. during 2004 and 2005, carried out by John Tsombikos while studying at the Corcoran College of Art and Design. This four letter word was ubiquitous around the Northwest quadrant of DC, and ranged from simple tagging to complete sentences to two-color stencils to a massive defacement on an overhead exit sign from the Theodore Roosevelt Bridge to Constitution Avenue.Tsombikos was arrested July 13, 2005 after tips from locals led police to his latest tag.

His graffiti also was reported as appearing in New York City, San Francisco,Raleigh, North Carolina, Rome, Italy, and elsewhere.

The Borf graffiti campaign attracted widespread attention without explaining its motivations. According to Tsombikos's mother and subsequent Borf communiqués, both the nickname "Borf" and the Borf face were references to Bobby Fisher, a close friend of Tsombikos' who had committed suicide, according to an interview on Dissonance Radio. In a video shown on July 29, 2006, the Borf Brigade, a group claiming responsibility for the graffiti spree, asserted that capitalism and the culture of aesthetics created the alienation and feelings of worthlessness that caused a 16-year-old to commit suicide. The group said they used other peoples' property to commemorate and pay homage to their deceased friend. The graffiti usually had overtones of youth liberation.