Operator space analogues of locally convex spaces Local operator spaces are defined to be projective limits of operator spaces, and they may be regarded as the "quantized" or "operator" analogues of locally convex spaces. In a striking contrast to normed spaces we will show that nuclear locally convex spaces have precisely one local operator space structure. Furthermore, we show that a local operator space is nuclear in the operator sense if and only if the underlying locally convex space is nuclear.