The Saudi State Security designated on Monday 13 individuals and three entities as terrorist.
A Lebanese national and two Iranians were blacklisted for ties to Iran's Quds Force and the Iran-backed terrorist Hezbollah party in Lebanon.
Four people, including an Afghan and a Syrian national, and a company were blacklisted for ties to ISIS.
Two Syrians were found to have set up the Qaterji company that sold fuel to ISIS and cooperating with other terrorist groups, such as the Iranian Revolutionary Guards.
Six people were designated for financing the terrorist Boko Haram group.
They had set up a cell in the United Arab Emirates that is affiliated with the group and funding its terrorist activities in Nigeria.
Two groups, the Saraya al-Ashtar and Saraya al-Mokhtar, were designated terrorist.
They are based in Bahrain and backed by Iran. They receive financial, logistic and military support from the Iran Guards.
The State Security said the assets of the designated persons and entities will be frozen and all direct and indirect activity with them will be barred.