Can TeVeS avoid Dark Matter on galactic scales?
  A fully relativistic analysis of gravitational lensing in TeVeS is presented.
By estimating the lensing masses for a set of six lenses from the CASTLES
database, and then comparing them to the stellar mass, the deficit between the
two is obtained and analysed. Considering a parametrised range for the TeVeS
function $mu(y)$, which controls the strength of the modification to gravity,
it is found that on galactic scales TeVeS requires additional dark matter with
the commonly used $mu(y)$. A soft dependence of the results on the cosmological
framework and the TeVeS free parameters is discussed. For one particular form
of $mu(y)$, TeVeS is found to require very little dark matter. This choice is
however ruled out by rotation curve data. The inability to simultaneously fit
lensing and rotation curves for a single form of $mu(y)$ is a challenge to a
"no dark matter" TeVeS proposal.
