  The 2-point spatial correlation function (CF), $\xi(s)$, has been used to
study the clustering of the galaxies in the preliminary version of the HIPASS
Bright Galaxy Catalogue (HIPASS BGC), which includes the 1,000 HI brightest
galaxies in the Southern sky. This is the first time the CF has been used to
analyse an HI-selected sample. The CF is well described by a power law,
$\xi(s)\sim(s/s_0)^{-\gamma}$, with slope $\gamma\sim1.7$ and correlation
length $s_0\sim3.55$ $h^{-1}$ Mpc using Peebles estimator. However, when the
Hamilton estimator is used, the CF is fit with $\gamma\sim2.19$ and
$s_0\sim3.37$ $h^{-1}$ Mpc. Note that, these HI-selected galaxies show less
clustering than optically-selected surveys which have a correlation length
$s_0\sim$ 5.5 $h^{-1}$ Mpc or larger.
