We present non-LTE oxygen abundances for a sample of B stars in the Orion association .
The abundance calculations included non-LTE line formation and used fully blanketed non-LTE model atmospheres .
The stellar parameters were the same as adopted in the previous study by Cunha & Lambert ( 1994 ) .
We find that the young Orion stars in this sample of 10 stars are described by a single oxygen abundance with an average value of A ( O ) =8.78 and a small dispersion of \pm 0.05 , dex which is of the order of the uncertainties in the analysis .
This average oxygen abundance compares well with the average oxygen abundance obtained previously in Cunha & Lambert ( 1994 ) : A ( O ) = 8.72 \pm 0.13 although this earlier study , based upon non-blanketed model atmospheres in LTE , displayed larger scatter .
Small scatter of chemical abundances in Orion B stars had also been found in our previous studies for neon and argon ; all based on the same effective temperature scale .
The derived oxygen abundance distribution for the Orion association compares well with other results for the oxygen abundance in the solar neighborhood .