  In this paper, using the Bondi coordinates, we discuss the angular momentum
at null infinity in five dimensions and address the Poincare covariance of the
Bondi mass and angular momentum. We also show the angular momentum loss/gain
law due to gravitational waves. In four dimensions, the angular momentum at
null infinity has the supertranslational ambiguity and then it is known that we
cannot construct well-defined angular momentum there. On the other hand, we
would stress that we can define angular momentum at null infinity without any
ambiguity in higher dimensions. This is because of the non-existence of
supertranslations in higher dimensions.
