The Bipartisan Campaign Reform Act of 2001 (BCRA, McCain–Feingold Act, ) is United States federal law that amended the Federal Election Campaign Act, which regulates the financing of political campaigns. Its chief sponsors were Senators John McCain (R-AZ) and Russell Feingold (D-WI). The law became effective on 6 November 2002, and the new legal limits became effective on 1 January 2003.

As noted in McConnell v. FEC, a United States Supreme Court ruling on the BCRA, the Act was designed to address two issues:

• The increased role of soft money in campaign financing, by prohibiting national political party committees from raising or spending any funds not subject to federal limits, even for state and local races or issue discussion;
• The proliferation of issue ads, by defining as "electioneering communications" broadcast ads that name a federal candidate within 30 days of a primary or caucus or 60 days of a general election, and prohibiting any such ad paid for by a corporation (including non-profit issue organizations such as Right to Life or the Environmental Defense Fund) or paid for by an unincorporated entity using any corporate or union funds.