Antanas Gustaitis (March 26, 1898 – October 16, 1941) was an officer in the Lithuanian Armed Forces who modernized the Lithuanian Air Force, which at that time was part of the Lithuanian Army. He was the architect or aeronautical engineer who undertook the task to design and construct several military trainers and reconnaissance aircraft. Following the restoration of Lithuanian independence he was commemorated by Vilnius Gediminas Technical University when the Antanas Gustaitis Aviation Institute was named after him.