The Wisconsin Legislative Reference Bureau, founded in 1901, is a nonpartisan legislative service agency that provides legal, research, and information services to the Wisconsin Legislature.

The LRB drafts all legislation for introduction in the legislature, prepares the executive budget bill, drafts all amendments, writes analyses of legislation, conducts legal, public policy, and historical research, and provides information about the legislature and its proceedings.

The LRB publishes the Laws of Wisconsin, the Wisconsin Statutes and Annotations, the Wisconsin Administrative Code and Register, and the Wisconsin Blue Book.