Welcome to the DCU Guide to Alien Races. While the profiles listed below certainly are not all the alien races ever seen in the DC Universe, we have worked to create the largest online reference available. Alien races may contain sentient or non-sentient, organic or non-organic, ancient, present, future or extinct races, whether seen or verbally mentioned. At this point, some profiles may be extremely sparse on information, but will expand over time.

The entries are listed in alphabetical order after name.