Ignacy Oziewicz, pseudonyms: "Czesław", "Czesławski", "Netta", "Jenczewski" (7 May 1887 – 10 January 1966) was a colonel of the Polish Army and a commandant of the National Armed Forces from 1942 to 1943.

Oziewicz was born on 7 May 1887 in the village of Linkmenys, near Švenčionys, Russian Empire (current Lithuania).

After graduation from a Vilnius high school (1907), he voluntarily joined the Imperial Russian Army.

On 16 March 1927, President Ignacy Mościcki, upon a request of Minister of Military Affairs Józef Piłsudski, promoted him to Colonel.

Oziewicz did not accept the decision to merge this organization with the Home Army (AK) because he considered it politically controlled by the Sanation.

He attempted to communicate with general Stefan Rowecki to include NSZ in the Home Army.