Tadeusz Ajdukiewicz (1852 – 9 January 1916) was a Polish realist painter from around the turn-of-the-century, best known for his battle-scenes, portraits, landscapes and paintings of horses.

Later, he travelled to Vienna and Munich on a scholarship along with Wojciech Kossak and studied in Józef Brandt's atelier among other places.

He joined the 1st Brigade of the Polish Legions in 1914 created by Józef Piłsudski, and died in battle around Kraków on 9 January 1916 during World War I.

His first cousin was a Polish historical painter Zygmunt Ajdukiewicz (1861-1917) born in Witkowice.

Commissioned by the Romanian Ministry of War, he also produced an album devoted to imperial army uniform while in Bucharest.