Mike Pompeo, Representative of Kansas and a former Army officer, has been selected. Mr. Pompeo is a member of the House Intelligence Committee and was a sharp critic of Hillary Clinton during the congressional investigation into the 2012 attack on the American diplomatic compound in Benghazi, Libya.

 

Jeff Sessions, Senator of Alabama, has been selected by Mr. Trump. Mr. Sessions is a strong proponent of strict immigration enforcement, reduced spending and tough-on-crime measures. His nomination for a federal judgeship in 1986 was rejected because of racially charged comments and actions, which are very likely to become an issue as he faces another set of Senate confirmation hearings.

 

Michael T. Flynn, a retired Army lieutenant general and former director of the Defense Intelligence Agency has been selected. General Flynn has been outspoken about his view of the threat posed by Islamist militancy and was an ardent supporter of Mr. Trump during the campaign.

 
Reince Priebus Mr. Trump announced on Sunday that he had chosen Mr. Priebus, the chairman of the Republican National Committee.

 

Stephen K. Bannon Also on Sunday, Mr. Trump announced the appointment of Mr. Bannon, a right-wing media executive and the chairman of the president-elect’s campaign. Many have denounced the move, warning that Mr. Bannon represents racist views.

John R. Bolton Former United States ambassador to the United Nations under George W. Bush

Bob Corker Senator from Tennessee and chairman of the Senate Foreign Relations Committee

Rudolph W. Giuliani Former New York mayor who campaign officials said on Tuesday is the leading contender for the job

Nikki R. Haley Governor from South Carolina

Zalmay Khalilzad Former United States ambassador to Afghanistan

Stanley A. McChrystal Former senior military commander in Afghanistan

Mitt Romney The 2012 Republican presidential nominee and former governor of Massachusetts

Thomas Barrack Jr. Founder, chairman and executive chairman of Colony Capital; private equity and real estate investor

Jeb Hensarling Representative from Texas and chairman of the House Financial Services Committee

Steven Mnuchin Former Goldman Sachs executive and Mr. Trump’s campaign finance chairman

Tim Pawlenty Former Minnesota governor

Tom Cotton Senator from Arkansas who saw combat in Iraq and Afghanistan as an Army infantry officer

Stephen J. Hadley National security adviser under George W. Bush

Duncan Hunter Representative from California and Marine reserve officer who served in both Iraq and Afghanistan

Jon Kyl Former senator from Arizona

James N. Mattis Retired Marine Corps general and former commander of United States Central Command

Jan Brewer Former Arizona governor

Robert E. Grady Gryphon Investors partner

Harold G. Hamm Chief executive of Continental Resources, an oil and gas company

Forrest Lucas President of Lucas Oil Products, which manufactures automotive lubricants, additives and greases

Sarah Palin Former Alaska governor

Sam Brownback Kansas governor

Chuck Conner Chief executive officer of the National Council of Farmer Cooperatives

Sid Miller Texas agricultural commissioner

Sonny Perdue Former Georgia governor

Dan DiMicco Former chief executive of Nucor Corporation, a steel production company

Lewis M. Eisenberg Private equity chief for Granite Capital International Group

Victoria A. Lipnic Equal Employment Opportunity commissioner and work force policy counsel to the House Committee on Education and the Workforce

Mike Huckabee Former Arkansas governor and 2016 presidential candidate

Bobby Jindal Former Louisiana governor who served as secretary of the Louisiana Department of Health and Hospitals

Rick Scott Florida governor and former chief executive of a large hospital chain

James L. Connaughton Chief executive of Nautilus Data Technologies and former environmental adviser to President George W. Bush

Robert E. Grady Gryphon Investors partner

Harold G. Hamm Chief executive of Continental Resources, an oil and gas company

Williamson M. Evers Education expert at the Hoover Institution, a think tank

Jeff Miller Retired chairman of the House Veterans Affairs Committee

Joe Arpaio Departing sheriff of Maricopa County, Ariz.

David A. Clarke Jr. Milwaukee County sheriff

Rudolph W. Giuliani Former New York mayor

Michael McCaul Representative from Texas and chairman of the House Homeland Security Committee

Myron Ebell A director at the Competitive Enterprise Institute and a prominent climate change skeptic

Robert E. Grady Gryphon Investors partner who was involved in drafting the Clean Air Act Amendments of 1990

Jeffrey R. Holmstead Lawyer with Bracewell L.L.P. and former deputy E.P.A. administrator in the George W. Bush administration

Dan DiMicco Former chief executive of Nucor Corporation, a steel production company, and a critic of Chinese trade practices

Kelly Ayotte Departing senator from New Hampshire and member of the Senate Armed Services Committee

Richard Grenell Former spokesman for the United States ambassador to the United Nations during the George W. Bush administration