The female journalist was killed while covering clashes between Muslim Brotherhood suporters and Egyptian security forces in eastern Cairo, according to her employer, private Egyptian newspaper Al-Dustour.
She was among three people killed in the clashes which followed the decision by Egyptian army chief, Abdel Fattah El-Sisi, to resign from the military and run for president.
It was unclear who was responsible for her death, but the two rival groups - those supporting the army, and those supportive of the Muslim Brotherhood - have blamed each other for the killing.