World War I Ptolemaios Sarigiannis (Greek: Πτολεμαίος Σαρηγιάννης, c. 1882–1958) was a Greek Army officer who rose to the rank of Major General, holding senior staff positions during the Greco-Turkish War of 1919–1922 and serving as Chief of the Hellenic Army General Staff in 1925–1926.

[2] In 1909 he was promoted to Lieutenant, and participated in the Balkan Wars of 1912–1913 as Commander of Engineers of the 3rd Infantry Division.

[2] Promoted to Captain in 1913 and Major in 1915, Sarigiannis joined the Venizelist Movement of National Defence, and served as chief of staff of the Crete Division on the Macedonian front.

In this capacity he also participated in the February 1921 London Conference as a member of the Greek delegation under Prime Minister Nikolaos Kalogeropoulos.

[2] In 1944, after Greece was liberated from German occupation, he served briefly as Vice-Minister of Military Affairs.