Cahill Gordon & Reindel LLP is an American law firm based in New York City with offices also in Washington, D.C. and London.

During and after the Second World War, under the leadership of John T. Cahill, former United States Attorney for the Southern District of New York, the firm grew dramatically.

In that 1971 case the Supreme Court of the United States refused to permit the Nixon Administration to stop the publication of thousands of pages of Vietnam War-related government documents.

On September 9, 2009, Abrams argued before the Supreme Court on behalf of Senator Mitch McConnell in the highly publicized re-argument ordered by the Court on the constitutionality of McCain-Feingold, defending the rights of corporations and unions to donate unlimited amounts of money to political allies in Citizens United v. Federal Election Commission.

The firm is active in the US capital markets, the Euromarket, and bank lending market, advising investment and commercial banks in their roles as underwriters, initial purchasers, arrangers, agents, and dealer managers.