Forced convection film boiling on a wedge has been investigated by means of two-phase boundary-layer theory. It has been shown that the effect of the pressure gradient in the liquid dominates the dynamics of the flow in the vapour layer. This is in contrast to the flow past a flat plate where no appreciable pressure gradient exists. It has also been shown that the physical structure of the flow changes according as the liquid subcooling is “small” or “large”. By carefully choosing different dimensionless variables for each of these cases the physical structure of the flow was reflected in the structure of the equations. Simple analytical solutions have thus been obtained which are accurate to within a few per cent over the greater portion of the parameter range of interest. These results have been checked numerically using typical values of the parameters for a water-steam system.