The \nu p process is a primary nucleosynthesis process which occurs in core collapse supernovae .
An essential role in this process is being played by electron antineutrinos .
They generate , by absorption on protons , a supply of neutrons which , by ( n,p ) reactions , allow to overcome waiting point nuclei with rather long beta-decay and proton-capture lifetimes .
The synthesis of heavy elements by the \nu p process depends sensitively on the \bar { \nu } _ { e } luminosity and spectrum .
As has been shown recently , the latter are affected by collective neutrino flavor oscillations which can swap the \bar { \nu } _ { e } and \bar { \nu } _ { \mu, \tau } spectra above a certain split energy .
Assuming such a swap scenario , we have studied the impact of collective neutrino flavor oscillations on the \nu p -process nucleosynthesis .
Our results show that the production of light p -nuclei up to mass number A = 108 is very sensitive to collective neutrino oscillations .