Derek Leebaert is an American technology executive who writes books on history and politics, which evoke insights on leadership.

He won the biennial 2020 Truman Book Award for Grand Improvisation, and he's a founder of the National Museum of the United States Army.

Presidential historian Richard Norton Smith praises it as "having done the near impossible--craft[ing] a fresh and challenging portrait of the man and his inner circle.

Leebaert cofounded Linguateq (telecom billing software) which was sold to SONUS Networks, and he currently works as a management consultant, focusing on the IT, healthcare, and defense sectors.

In Washington, Leebaert served as chief economist of CBEMA, now the Information Industry Technology Council, and was appointed a Smithsonian Fellow.