Alexandros Mazarakis-Ainian (Greek: Αλέξανδρος Μαζαράκης-Αινιάν, c. 1874–1943) was a Hellenic Army officer who rose to the rank of lieutenant general.

He served thrice as Chief of the Hellenic Army General Staff, occupied various important ministerial positions and became president of the Academy of Athens.

In 1920 he was promoted to major general, and led his division to the capture of Balıkesir and in the advance towards Bursa during the Greek summer offensive.

[1][2] In 1921, he published a series of articles criticizing the new government's conduct of the war in Asia Minor, recommending the stabilization and fortification of the then-held lines instead of an advance into the interior of Turkey.

He was subsequently recalled to active service and placed as chief of staff of the Army of Evros in Western Thrace, and then participated in the Greek mission to Conference of Lausanne as a military adviser.

[1][2] He served as Minister for Military Affairs in the 1926–1928 Alexandros Zaimis cabinets,[3][4][5] and in September 1928 he was elected a member of the Academy of Athens for his historical studies.

[6] In 1935, following the outbreak of a pro-Venizelist coup attempt, he was suspended from active service, and finally retired in 1937 due to the age limit.