Thomas F. Gimble is a retired American government official who served as Acting Inspector General of the United States Department of Defense (DoD) from 2005 to 2008. In this role, he oversaw investigations into defense policy, intelligence matters, procurement, financial management, and policy compliance, playing a key role in ensuring accountability during major defense initiatives such as the Iraq War. Gimble emphasized auditing and integrity in DoD operations, addressing issues like contract fraud and resource allocation. He testified before the Senate Armed Services Committee in February 2007. Prior to becoming Acting Inspector General, he served as Principal Deputy Inspector General from 2002 to 2005. His federal career spanned over three decades, beginning in the 1970s with the Defense Contract Audit Agency, where he advanced through various auditing and financial management positions focused on improving fiscal responsibility and operational efficiency in military spending. Gimble retired in 2008 after a distinguished career dedicated to public sector oversight, with his contributions to defense accountability recognized in official DoD records, although he maintained a low public profile outside his professional duties.