Genus Pica
Genus Urocissa
Genus Cyanopica
Genus Cissa
The Black Magpie, Platysmurus leucopterus, despite its name, is a jay.
Other corvids resembling magpies include the treepies, genus Dendrocitta.
Black and white birds unrelated to the corvids are often named magpies by analogy. These include:
wikipedia.org dumped 2003-03-17 with terodump