- KleinA surname from German, equivalent to English Small.
- KleinbergA surname.
- KleinschmidtA surname.
- German Spitz KleinA canine variety characterized by their small-sized body, additionally with them being very multi-colored and is one of the 5 different German Spitz dog breeds (the other breeds being the German Spitz Mittel, the Giant Spitz, Wolfspitz and the Pomeranian).