Deputy Assistant Secretary of the Navy (Research, Development, Test & Evaluation)
The Deputy Assistant Secretary of the Navy for Research, Development, Test and Evaluation serves as the principal adviser to the United States Assistant Secretary for Research, Development and Acquisition on all matters pertaining to science, technology, advanced research and development programs; system prototype programs; and management of science and engineering.
The DASN monitors and coordinates with senior Naval officials among the various warfare centers and labs, including the Naval Research Laboratory; the Office of Naval Research; the Naval systems commands; and others in the Naval enterprise to facilitate advancement of technology systems into the fleet.
The current DASN is Pete Reddy.
| Name | Assumed office | Left office | Assistant Secretary served under |
| Mary Lacey | 2011 | 2015 | Sean Stackley |
| John Burrow | 2015 | 2017 | Sean Stackley |
| William Bray | 2017 | 2020 | Sean Stackley James Geurts |
| Joan Johnson | 2020 | present | James Geurts Frederick J. Stefany |