NASA SBIR/STTR Program Solicitation Details |


Phase II proposals are follow-on work to the original Phase I award, therefore offerors are required to submit proposals that are in alignment with the original subtopic that Phase I was awarded under. Offerors are encouraged to review the subtopic and ensure the proposed effort meets the subtopic scope, goals, and Phase II deliverables. To review the subtopic that was solicited in Phase I, go to and review section 9: Research Subtopics for SBIR in the 2023 Phase I solicitation.


    The SBIR subtopics are organized by Mission Directorate(s).

    Subtopic numbering conventions from previous year’s solicitations have been maintained for traceability of like-subtopics from previous solicitations. The mapping is as follows:

    A – Aeronautics Research Mission Directorate (ARMD)

    H – Human Exploration and Operations Mission Directorate (HEOMD)

    S – Science Mission Directorate (SMD)

    Z – Space Technology Mission Directorate (STMD)

    Related subtopic pointers are identified when applicable in the subtopic headers to assist proposers with identifying related subtopics that also potentially seek related technologies for different customers or applications. As stated in Section 3.1, an offeror shall not submit the same (or substantially equivalent) proposal to more than one subtopic. It is the offeror’s responsibility to select which subtopic to propose to.

    SBIR Research Topics by Mission Directorate