Abstract: A bicycle basket assembly that includes a two-part, spherically-shaped clamshell cage assembly; an upper cage mounting bracket; and a lower cage mounting bracket; the clamshell cage assembly including a lower hemisphere cage section that is hingedly attached to an upper hemisphere cage section; the lower hemisphere cage section including a lower circular opening, a circular-shaped lower rim portion and a lower locking hasp member; the upper hemisphere cage section including an upper circular opening, a circular-shaped upper rim portion and an upper locking hasp member; the upper cage mounting bracket having a first upper bracket end and a second upper bracket end, the first upper bracket end extending from a portion of the circular-shaped lower rim portion of the lower hemisphere cage section, the second upper bracket end having a goose neck insertion passageway formed therethrough that is sized to receive therethrough the goose neck portion of a bicycle handlebar support; the lower cage mounting bracket incl