We present a catalog of 321 compact radio sources in the declination range 0{deg}>{delta}>-30{deg}. The positions of these sources have been measured with a two-dimensional rms accuracy of 35milliarcseconds using the NRAO Very Large Array. Each source has a peak flux density >50mJy at 8.4GHz. We intend for this catalog to be used mainly for selection of phase calibration sources for radio interferometers, although compact radio sources have other scientific uses.