The first Battle of Raszyn was fought on 19 April 1809 between armies of the Austrian Empire under Archduke Ferdinand Karl Joseph of Austria-Este and the Duchy of Warsaw under Józef Antoni Poniatowski, as part of the War of the Fifth Coalition in the Napoleonic Wars. The battle was not decisive, but it did result in the Austrians obtaining their goal by capturing the Polish capital Warsaw.

Archduke Ferdinand Karl Joseph of Austria-Este was the third son of Archduke Ferdinand of Austria-Este and of his wife Princess Maria Beatrice Ricciarda d'Este, last member and heiress of the House of Este. For much of the Napoleonic Wars he was in command of the Austrian army.