# Deputy Administrator of NASA

The Deputy Administrator of the National Aeronautics and Space Administration is the second-highest-ranking official of NASA, the national space agency of the United States. Administrator of NASA 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.

## History

The longest-running (acting) Deputy Administrator was John R. Dailey, who held the post following his retirement from the United States Marine Corps. The longest-running full deputy administrator was Hugh Latimer Dryden, who was the first deputy administrator. William R. Graham has held the post of Deputy Administrator twice, and was the acting administrator in between, as did Frederick D. Gregory. Dr. Daniel Mulville served as the acting deputy administrator twice, and was acting administrator in between.
The current Deputy Administrator is Pamela Melroy, who was confirmed by the Senate on June 17, 2021, and sworn in on June 21, 2021.

## Deputy administrators

| Name | Term start | Term end | Term length |
| DrydenDr. Hugh L. Dryden | 1958-08-19August 19, 1958 | 1965-12-02December 2, 1965 | 26622662 days |
| SeamansDr. Robert C. Seamans Jr. | 1965-12-21December 21, 1965 | 1968-01-05January 5, 1968 | 0745745 days |
| PaineDr. Thomas O. Paine | 1968-03-25March 25, 1968 | 1969-03-20March 20, 1969 | 0360360 days |
| LowDr. George M. Low | 1969-12-03December 3, 1969 | 1976-06-05June 5, 1976 | 23762376 days |
| LovelaceDr. Alan M. Lovelace | 1976-07-02July 2, 1976 | 1981-07-10July 10, 1981 | 18341834 days |
| MarkDr. Hans Mark | 1981-07-10July 10, 1981 | 1984-09-01September 1, 1984 | 11491149 days |
| GrahamDr. William R. Graham | 1985-11-25November 25, 1985 | 1985-12-04December 4, 1985 | 00099 days |
| GrahamDr. William R. Graham | 1986-05-11May 11, 1986 | 1986-10-01October 1, 1986 | 0143143 days |
| MyersDale D. Myers | 1986-10-06October 6, 1986 | 1989-05-13May 13, 1989 | 0950950 days |
| ThompsonJames R. Thompson, Jr. | 1989-07-06July 6, 1989 | 1991-11-08November 8, 1991 | 0885885 days |
| CohenAaron Cohen (acting) | 1992-02-19February 19, 1992 | 1992-11-01November 1, 1992 | 0256256 days |
| DaileyJohn R. Dailey (acting) | 1992-11-03November 3, 1992 | 1999-12-31December 31, 1999 | 31733173 days |
| MulvilleDr. Daniel Mulville (acting) | 2000-01-01January 1, 2000 | 2001-11-19November 19, 2001 | 0688688 days |
| Mulville2Dr. Daniel Mulville (acting) | 2001-12-21December 21, 2001 | 2002-08-11August 11, 2002 | 0233233 days |
| GregoryFrederick D. Gregory | 2002-08-12August 12, 2002 | 2005-02-20February 20, 2005 | 0923923 days |
| Gregory2Frederick D. Gregory | 2005-04-14April 14, 2005 | 2005-11-04November 4, 2005 | 0204204 days |
| DaleShana Dale | 2005-11-04November 4, 2005 | 2009-01-17January 17, 2009 | 11711171 days |
| GarverLori Garver | 2009-07-16July 17, 2009 | 2013-09-06September 6, 2013 | 1512 days |
| NewmanDr. Dava Newman | 2015-05-15May 15, 2015 | 2017-01-20January 20, 2017 | 616 days |
| Lesa Roe (Acting) | January 20, 2017 | September 11, 2017 | 234 days |
| Krista Paquin (Acting) | September 11, 2017 | May 2018 | |
| James Morhard | October 17, 2018 | January 20, 2021 | 826 days |
| Pamela Melroy | June 21, 2021 | January 20, 2025 | 3 years, 217 days |