The dual supergravity description of the ow between (2,0) five-brane theory
and the non-commutative five-brane (OM) theory is examined at critical fiv
e-brane field strength. The self-duality of the field strength is shown to
arise as a consequence of the supergravity solution. Open membrane solution
s are examined in the background of the five brane giving rise to an M anal
ogue of the non-commutative open string (NCOS) solution.