Mohammed bin Awadh al-Zahrani was convicted of stabbing to death fellow tribesman Riad bin Saeed al-Zahrani in a dispute, it said in a statement on the official SPA news agency.
Mass executions: Saudi Arabia executes 47 over terror charges
He was executed in the western province of Jeddah.
Most executions in the conservative Muslim country are carried out by beheading with a sword.
Last year, Saudi Arabia executed 153 people, most of them for drug trafficking or murder, according to an AFP tally.
Mass executions: Saudi Arabia executes 47 over terror charges
Amnesty International says the number of executions in Saudi Arabia in 2015 was the highest for two decades.
The kingdom practices a strict Islamic legal code under which murder, drug trafficking, armed robbery, rape and apostasy are all punishable by death.
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