Jennifer Natalya Pritzker is an American investor, philanthropist, and member of the Pritzker family. Pritzker retired as a lieutenant colonel from the Illinois Army National Guard (ILARNG) in 2001, and was later made an honorary Illinois colonel. Founder of the Tawani Foundation in 1995, Tawani Enterprises in 1996, and the Pritzker Military Library in 2003, Pritzker has been devoted to civic applications of inherited and accrued wealth, including significant donations to broaden understanding and support for "citizen soldiers."

The Pritzker Military Museum & Library is a non-profit museum and a research library for the study of military history on Michigan Avenue in Chicago, Illinois. The institution was founded in 2003, and its specialist collections include material relating to Winston Churchill and war-related sheet music.