Mieczysław Sylwester Garsztka (31 December 1896 - 10 June 1919) was a Polish pilot and a flying ace of the German air force during World War I and later the Polish air force during the Polish-Ukrainian War.

[citation needed] He was slightly injured commanding a company in the 1st battalion of the 1st Nassau Infantry Regiment Nr.

[citation needed] After completing his flying training in Posen (Poznań), and then a fighter pilot course in Nivelles, he was assigned to Jagdstaffel 31 (Jasta 31) in St. Loup in Champagne on 7 June 1918.

His probable victors were Captain Donald MacLaren, James Leith and Cyril H. Sawyer.

At first he was made an instructor pilot in Warsaw as he was skilled in German aircraft pilotage, but he asked to be sent to the front.

[1] On 10 June 1919, Mieczysław Garsztka was killed in an air crash, flying a newly reconstructed SPAD S.VII fighter in Lwów.