HBX (disambiguation) HBX may refer to: HBx, a hepatitis B viral protein Harvard Business X, a program of Harvard Business School Harz-Berlin-Express, a German train High Blast Explosive Hubli Airport, in Karnataka, India Topics referred to by the same term This disambiguation page lists articles associated with the title HBX.If an internal link led you here, you may wish to change the link to point directly to the intended article.