  We present sensitive, high angular resolution (6" x 5") 21-cm observations of
the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI
observations, obtained using the VLA in B-configuration, are the highest
resolution to date of this galaxy, and reveal hitherto unprecedented detail in
the distribution and kinematics of the HI on sub-kiloparsec scales. A complete
analysis and discussion of the HI data are presented and the global properties
of the galaxy are related to the bar dynamics presented in Paper I.
