A bicycle accessory mounting device comprises: a flexible band having opposite ends and inner and outer faces; securing means which interconnects the ends of the band thereby to draw the band around a frame member of a bicycle; a connection block having a central abutment surface at which the connection block is secured to the inner face of the band, and a pair of mounting surfaces which extend from the abutment surface and diverge from each other in the direction away from the abutment surface; and respective fasteners provided on the mounting surfaces, the fasteners extending through the band for securing a respective accessory to the outer face of the band.