Robert Watson Cobb is an American lawyer. He worked for the George W. Bush administration before becoming NASA Inspector General.

Cobb attended Vanderbilt University, graduating in 1982 cum laude.

He graduated from George Washington University's National Law Center in 1986 cum laude.

Cobb worked for five years as an associate at the law firm of Ober, Kaler, Grimes & Shriver.

Cobb worked for almost nine years at the United States Office of Government Ethics before becoming Associate Counsel to the President in the George W. Bush administration. In this position he was responsible for the administration of the White House ethics program (the conflict of interest and financial disclosure clearance for candidates for nomination to Senate-confirmed positions) under the supervision of then-White House Counsel Alberto Gonzales.

President George W. Bush appointed Cobb to the position of NASA Inspector General on February 25, 2002. The nomination was sent to Senate February 26, 2002 and was confirmed on April 11, 2002.

Cobb served as an "observer" to the Columbia Accident Investigation Board, investigating the 2003 Space Shuttle Columbia disaster.

On April 2, 2009, Mr. Cobb offered his resignation to President Obama, effective April 11, 2009.

Mr. Cobb is currently counsel to the Ethics Committee for Montgomery County, Maryland.