  We define the QCD Husimi distribution as the phase space distribution of
partons inside the nucleon. Compared to the more well-known Wigner
distribution, the Husimi distribution is better behaved and positive. It thus
allows for a probabilistic interpretation and can be used to define the
`entropy' of the nucleon as a measure of complexity of the partonic structure.
A possible connection to the Color Glass Condensate approach at small-$x$ is
also discussed.
