Ibrahim Mohammed Salman was caught trying to smuggle opium which was hidden in his car, the ministry said in a statement carried by state news agency SPA. He was executed in the northern city of Tabuk, the ministry said.
Saudi Arabia executes national for murder
Most executions in ultra-conservative Saudi Arabia are done by beheading with a sword.
The kingdom on January 2 executed 47 people in a single day for "terrorism".
In 2015 the kingdom executed 153 people, mostly for drug trafficking or murder, according to an AFP tally.
Amnesty International says the number of executions in Saudi Arabia last year was the highest for two decades. However, the tally was far behind that for China and Iran.
Saudi executes Ethiopian woman for axe murder
The kingdom practises a strict Islamic legal code under which murder, drug trafficking, armed robbery, rape and apostasy are all punishable by death.
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