New York University School of Law is receiving a $20 million gift from real estate developer and Miami Dolphins owner Stephen M. Ross, school officials told Law Blog on Tuesday.

The gift is unrestricted, allowing NYU to use the money as it deems fit. The school said the donation is largely in the form of a bequest and will be transferred upon Mr. Ross's death. At the moment, it stands as the single largest donation to the elite Greenwich Village law school, NYU officials said.

Mr....