Thomas Crooks Ferguson (November 27, 1933 – June 28, 2021) was an American diplomat and lawyer who served as Ambassador to Brunei and a U.S. government official.

In August 1960, he served on the campaign staff of Senator John S. Cooper in Washington, D.C., until November 1960.

In 2012, Ferguson joined GFIT Ventures as a strategic advisor specializing on Intel and International clients where he continues to work today.

[2] From 1984 to 1987 Ferguson was deputy commissioner and chief operating officer of the United States Immigration and Naturalization Service in Washington, D.C.

While serving as ambassador, he promoted military sales and U.S. business in country and U.S. government interests in region.