An Iranian Foreign Ministry official confirmed deportation of several Kuwaiti diplomats, ISNA reported.
The measure came in response to a similar measure already taken by Kuwait.
On April 2, Kuwait expelled three Iranian diplomats of the Iranian Embassy in Kuwait City, claiming that they had links to a spy network.
A Kuwaiti newspaper previously claimed that three other men, two Iranians and a Kuwaiti individual have carried out espionage activities in the neighboring country.
Also al-Alam, the Arabic-language channel of Iran's state television, on Sunday quoted an unnamed official as saying "several" Kuwaiti diplomats had been given 10 days to leave their posts in response to Kuwait's "inappropriate political behavior."
Iran denies allegations on conducting any acts of espionage against Kuwait. Ali Akbar Salehi, Iran's Foreign Minister, said over the weekend that the espionage charges were "fake."