Hasan Ghazwani, a Saudi national, was executed in the city of Jizan, the ministry said in a statement carried by SPA state news agency.
It said Ghazwani's affair had led to a pregnancy but did not disclose their family relationship or whether the woman had delivered.
The ministry cited a saying attributed to Prophet Mohammed that stipulates death for whose who commit incest.
A Pakistani man was also executed today for smuggling drugs into the kingdom, it said in a separate statement.
Rape, murder, apostasy, armed robbery and drug trafficking are all punishable by death under the oil-rich nation's strict version of sharia, or Islamic law.
The latest beheadings brings to 75 the number of executions carried out in Saudi Arabia this year, according to an AFP count.
In 2012, the country carried out 76 executions, according to a tally based on official figures.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
