SLM Corporation (commonly known as Sallie Mae; originally the Student Loan Marketing Association) is a publicly traded U.S. corporation that provides consumer banking. Its nature has changed dramatically since it was set up in the early 1970s. At first, it was a government entity that serviced federal education loans. It then became private and started offering private student loans, although at one point it had a contract to service federal loans.

The company's primary business is creating, servicing, and collecting private education loans. The company also provides online tools and resources for college planning. Sallie Mae previously originated federally guaranteed student loans under the Federal Family Education Loan Program (FFELP) and worked as a servicer and collector of federal student loans on behalf of the Department of Education. The company now offers private education loans and manages more than $12.97 billion in assets.

On April 30, 2014, Sallie Mae spun off its loan servicing operation and most of its loan portfolio into a separate, publicly traded entity called Navient Corporation. Navient is the largest servicer of federal student loans and acts as a collector on behalf of the Department of Education.