His beheading in the western Mecca province brings to 87 the number of Saudis and foreigners executed this year in the oil-flush state, according to an AFP tally.
Saudi Arabia has one of the world's highest execution tolls.
Sadruddin Saeedullah Khan was caught smuggling "a large amount of heroin," the Interior Ministry said.
In addition to amphetamines and other drugs, Saudi authorities seized almost 18 kilogrammes of raw heroin during the Islamic calendar year that ended in October, according to the ministry.
Rape, murder, apostasy and armed robbery are also punishable by death under Saudi Arabia's strict version of Islamic sharia law.
