The Good Law Project is a United Kingdom-based political^[1] non-profit company. Founded by Jolyon Maugham, the Good Law Project states that its mission is to achieve change through the law.

The Good Law Project was founded in January 2017 as a company limited by guarantee under English law^[2] headed by Maugham. It is a non-profit but not a registered charity. In 2019 it launched a crowdfunded challenge to the prorogation of Parliament by Boris Johnson's Conservative government, which was ultimately successful. The prorogation was ruled unlawful by the Supreme Court,^[3] but by this time Johnson's government had pushed through their Brexit deal so the issue was moot. However, the £200,000 raised enabled Good Law Project to hire more staff and launch other fundraisers to take on more cases.

In 2022, the High Court ruled that the Good Law Project does not have 'carte blanche' for bringing in judicial reviews.^{[4][clarification needed]}