# Administrator of NASA

The administrator of the National Aeronautics and Space Administration is the highest-ranking official of NASA, the national space agency of the United States. The administrator is NASA's chief decision maker, responsible for providing clarity to the agency's vision and serving as a source of internal leadership within NASA. The office holder also has an important place within United States space policy, and is assisted by a deputy administrator.
The administrator is appointed by the president of the United States, with the advice and consent of the United States Senate, and thereafter serves at the president's pleasure. Janet Petro has served as the acting administrator since January 20, 2025. Entrepreneur and commercial astronaut Jared Isaacman has been the nominee for NASA administrator since December 4, 2024.

## Duties and responsibilities

The administrator serves as NASA's chief executive officer, accountable to the President for the leadership necessary to achieve the agency's mission. This leadership requires articulating the agency's vision, setting its programmatic and budget priorities and internal policies, and assessing Agency performance.

## History

The first administrator of NASA was Dr. T. Keith Glennan; during his term he brought together the disparate projects in space development research in the US. Daniel Goldin held the post for the longest term (nearly 10 years), and is best known for pioneering the "faster, better, cheaper" approach to space programs. The only person to hold the post twice is James C. Fletcher, who returned to NASA following the Challenger disaster.
The current administrator is KSC director Janet Petro, who was designated by President Donald Trump on January 20, 2025 as acting Administrator. She replaced Bill Nelson, who was nominated by President Joe Biden on March 19, 2021, confirmed by the Senate on April 29, and officially sworn in on May 3. The current nominee for administrator is entrepreneur and commercial astronaut Jared Isaacman, who was nominated by President-elect Donald Trump on December 4, 2024.

## List of administrators
### Status

| No. | Name | Took office | Left office | Days served | President serving under |
| 1 | T. Keith Glennan | August 19, 1958 | January 20, 1961 | 885 | Dwight D. Eisenhower |
| - | Hugh Dryden | January 11, 1961 | February 14, 1961 | 24 | John F. Kennedy |
| 2 | James E. Webb | February 14, 1961 | October 7, 1968 | 1,035 | John F. Kennedy |
| 2 | James E. Webb | February 14, 1961 | October 7, 1968 | 1,781 (2,816 total) | Lyndon B. Johnson |
| 3 | Thomas O. Paine | October 8, 1968 | March 21, 1969 | 104 | Lyndon B. Johnson |
| 3 | Thomas O. Paine | October 8, 1968 | March 21, 1969 | 60 | Richard Nixon |
| 3 | Thomas O. Paine | March 21, 1969 | September 15, 1970 | 543 (707 total) | Richard Nixon |
| - | George Low | September 16, 1970 | April 26, 1971 | 222 | Richard Nixon |
| 4 | James C. Fletcher | April 27, 1971 | May 1, 1977 | 1,200 | Richard Nixon |
| 4 | James C. Fletcher | April 27, 1971 | May 1, 1977 | 895 | Gerald Ford |
| 4 | James C. Fletcher | April 27, 1971 | May 1, 1977 | 101 (3258 total) | Jimmy Carter |
| - | Alan M. Lovelace | May 2, 1977 | June 20, 1977 | 49 | Jimmy Carter |
| 5 | Robert A. Frosch | June 21, 1977 | January 20, 1981 | 1,309 | Jimmy Carter |
| - | Alan M. Lovelace | January 21, 1981 | July 10, 1981 | 171 (220 total) | Ronald Reagan |
| 6 | James M. Beggs | July 10, 1981 | December 4, 1985 | 1,608 | Ronald Reagan |
| - | William Graham | December 4, 1985 | May 11, 1986 | 158 | Ronald Reagan |
| 7 | James C. Fletcher | May 12, 1986 | April 8, 1989 | 984 | Ronald Reagan |
| 7 | James C. Fletcher | May 12, 1986 | April 8, 1989 | 78 (3258 total) | George H. W. Bush |
| - | Dale D. Myers | April 8, 1989 | May 13, 1989 | 35 | George H. W. Bush |
| 8 | Richard H. Truly | May 14, 1989 | June 30, 1989 | 47 | George H. W. Bush |
| 8 | Richard H. Truly | July 1, 1989 | March 31, 1992 | 1,004 (1,052 total) | George H. W. Bush |
| 9 | Daniel Goldin | April 1, 1992 | November 17, 2001 | 294 | George H. W. Bush |
| 9 | Daniel Goldin | April 1, 1992 | November 17, 2001 | 2,922 | Bill Clinton |
| 9 | Daniel Goldin | April 1, 1992 | November 17, 2001 | 301 (3,517 total) | George W. Bush |
| - | Daniel Mulville | November 19, 2001 | December 21, 2001 | 32 | George W. Bush |
| 10 | Sean O'Keefe | December 21, 2001 | February 11, 2005 | 1,148 | George W. Bush |
| - | Frederick D. Gregory | February 11, 2005 | April 14, 2005 | 62 | George W. Bush |
| 11 | Michael D. Griffin | April 14, 2005 | January 20, 2009 | 1,377 | George W. Bush |
| - | Christopher Scolese | January 20, 2009 | July 17, 2009 | 178 | Barack Obama |
| 12 | Charles Bolden | July 17, 2009 | January 20, 2017 | 2,744 | Barack Obama |
| - | Robert M. Lightfoot Jr. | January 20, 2017 | April 23, 2018 | 458 | Donald Trump |
| 13 | Jim Bridenstine | April 23, 2018 | January 20, 2021 | 1,003 | Donald Trump |
| - | Steve Jurczyk | January 20, 2021 | May 3, 2021 | 103 | Joe Biden |
| 14 | Bill Nelson | May 3, 2021 | January 20, 2025 | 1,358 | Joe Biden |
| - | Janet Petro | January 20, 2025 | Incumbent | 19 | Donald Trump |
| - | Jared Isaacman | - | Nominee | - | Donald Trump |

## Line of succession

The line of succession for the administrator of the National Aeronautics and Space Administration is as follows:
* Deputy administrator of NASA
* Associate administrator of NASA
* Chief of staff of NASA
* Director of Johnson Space Center (Houston, Texas)
* Director of Kennedy Space Center (Merritt Island, Florida)
* Director of Marshall Space Flight Center (Redstone Arsenal, Alabama)
In the event of there being no deputy administrator of NASA, the associate administrator will serve as acting administrator.