Abstract
We propose a scenario where inflation is driven by non-minimally coupled massive vector
fields. In an isotropic homogeneous universe these fields behave in precisely the same way
as a massive minimally coupled scalar field. Therefore our model is very similar to the
model of chaotic inflation with a scalar field. For vector fields the isotropy of expansion is
achieved either by considering a triplet of orthogonal vector fields or at the expense of
N
randomly oriented vector fields. In the latter case the substantial anisotropy of the
expansion of order 
survives until the end of inflation. The lightest vector fields might also force the late time
acceleration of the universe.