KBO

KBO can refer to:

Kuiper Belt object
Korea Baseball Organization
Keep the Bastards Out, a fictional organization invented and promoted by Seattle Post-Intelligencer columnist Emmett Watson
KBO!, a hardcore punk band from Serbia
Keep Buggering On, a catchphrase used by Winston Churchill

Translation

The word "KBO" occurs as such in the following languages: English, German, Korean, Italian, Japanese, Portuguese, Simple English.