  We present the results of a photometric and spectroscopic survey of the
globular cluster system of NGC 5128 (Centaurus A), a galaxy whose proximity
makes it an important target for early-type galaxy studies. We imaged three
fields in UBVRI that extend 50 and 30 kpc along the major and minor axes,
respectively. We used both color and size information to develop efficient
selection criteria for differentiating between star clusters and foreground
stars. In total, we obtained new velocities for 138 globular clusters, nearly
tripling the number of known clusters, and bringing the confirmed total in NGC
5128 to 215. We present a full catalog of all known GCs, with their positions,
photometry, and velocities. In addition, we present catalogs of other objects
observed, such as foreground stars, background galaxies, three Galactic white
dwarfs, seven background QSOs, and 52 optical counterparts to known X-ray point
sources. We also report an observation of the cluster G169, in which we confirm
the existence of a bright emission line object. This object, however, is
unlikely to be a planetary nebula, but may be a supernova remnant.
