  Many extensions of the Standard Model include $SU(2)_L \times U(1)_Y$ singlet
higgs bosons, $h^0$, and also vectorlike fermions which couple to it. The
production and detection possibilities of such singlet neutral scalars at
hadron colliders are considered for different scenarios of vectorlike fermions.
We find that for some values of masses and couplings, detection at the CERN
Large Hadron Collider (LHC) appears to be a distinct possibility, while at the
Fermilab Tevatron upgrade the $h^0$ might be observed only in very favourable
circumstances.
