  We study general conditions for the gravitino to be the lightest
supersymmetric particle (LSP) in models with gravity mediated supersymmetry
breaking. We find that the decisive quantities are the Kaehler potential K and
the gauge kinetic function f. In constrained MSSM (CMSSM) type models, the
gravitino LSP occurs if the gaugino mass at the GUT scale is greater than
approximately 2.5 gravitino masses. This translates into \sqrt{K"}/f' < 0.2,
where the derivatives are taken with respect to the dominant SUSY breaking
field. This requirement can easily be satisfied in string-motivated setups.
