A lower court in Kuwait on Monday sentenced five men to 10 years in jail each for raising funds for the ISIL group.
Three of those convicted were Kuwaiti citizens, according to the court ruling.
The court ordered that the remaining two, who were foreigners, be deported after serving the jail term. Their nationalities were not immediately clear.
It also acquitted two others, AFP reported on Monday.
The men were charged with raising about 400,000 Kuwaiti dinars ($1.3 million) and transferring the funds to ISIL, which has seized control of large parts of Syria and Iraq and carried out attacks throughout the Middle East.
Over the past year, Kuwaiti courts have issued several rulings against ISIL supporters.
In September, a lower court sentenced seven people, including five in absentia, to death for helping a Saudi suicide bomber carry out an attack on a Shiite mosque in Kuwait that killed 26 worshipers and wounded hundreds.