Palestinian security and medical officials named the man as Mohammed Al-Aaraj, 25, and said he was among at least 10,000 people clashing with soldiers and border police in Qalandiya, between Jerusalem and Ramallah, last night.
They said that at least 20 people were injured in the protest, several by live fire.
"There are thousands of rioters there," an army spokeswoman told AFP.
"They are rolling burning tyres and throwing molotov cocktails and fireworks at soldiers and border police," she said.
She could not confirm nor deny the use of live rounds.