Non-commutative solitons

We find classically stable solitons (instantons) in odd (even) dimensional scalar non-commutative field theories whose scalar potential, V(phi), has a t least two minima. These solutions are bubbles of the false vacuum whose s ize is set by the scale of noncommutativity. Our construction uses the corr espondence between non-commutative fields and operators on a single particl e Hilbert space. In the case of non-commutative gauge theories we note that expanding around a simple solution shifts away the kinetic term and result s in a purely quartic action with linearly realised gauge symmetries.