A bicycle sprocket assembly comprises a sprocket support member. The sprocket support member comprises a central cylindrical portion and a plurality of sprocket support portions. The plurality of sprocket support portions extends radially outwardly from the central cylindrical portion with respect to a rotational center axis of the bicycle sprocket assembly. At least one sprocket support portion of the plurality of sprocket support portions comprises at least one radially extending surface, at least one axially extending surface, and an interior cavity. The at least one radially extending surface extends radially relative to the rotational center axis to support at least one of the at least one sprocket. The at least one axially extending surface extends in an axial direction parallel to the rotational center axis.