Abstract
Stellar rotation influences the tracks, the lifetimes, the mass determinations, the chemical composition of massive stars, as well as the formation of red supergiants and WR stars. The anisotropic mass loss rates of massive rotating stars is an essential feature for accounting LBV nebulae. It also leads to WO stars with little or no He left, keeping at the same time a high enough rotation to produce a possible GRB precursor.
