The Fisher-Nightingale Houses, Inc. (FNHI) is a 501(c)3 nonprofit organization that provides support to the two Fisher Houses located at Wright-Patterson Air Force Base and on the Dayton VA Medical Center Campus. Even though these houses are located on military or VA installations, they have no corporate or government underwriting and must rely on private donations for some of their operating expenses. FNHI raises funds to support these compassionate care facilities that house patients and their families receiving treatment at the Wright-Patt Medical Center and the historic Dayton VA Medical Center.

It is not part of the Department of Defense or any of its components (Army, Navy, Air Force, Marines, Coast Guard or the Space Force) or the Department of Veterans Affairs and it has no governmental status.