Wisconsin Institute for Law and Liberty

The Wisconsin Institute for Law and Liberty (WILL) is a nonprofit public interest law firm located in Milwaukee, Wisconsin, that says it is "dedicated to the promotion of free markets, individual liberty, and a robust civil society." The group was founded by lawyer Rick Esenberg in 2011. Esenberg sought to found a group of advocacy lawyers dedicated to conservative and libertarian causes to counter liberal legal organizations.

The organization published a study in June 2016 which found that public-sector union reforms passed in Wisconsin in 2011 had not harmed the state's public schools.

In 2016, the organization announced the launch of the Center for Competitive Federalism, a national effort to bring lawsuits and conduct research to promote state sovereignty. That same year, the organization filed a lawsuit seeking to overturn Wisconsin's Unfair Sales Act, also known as the minimum markup law, which prevents companies from selling products below cost.