The 28-year-old has penned a two-year contract with Zob Ahan for an undisclosed fee.
Zob Ahan FC has signed Chrisantus from Spanish club Conquense.
Chrisantus will be joined by fellow Nigerian compatriot Ebiabowei Baker, who signed with Zobahan two days ago.
Zob Ahan are preparing for a new top-flight campaign in Iran and the AFC Champions League Round of 16 clash with Al Ittihad of Saudi Arabia.
Zob Ahan will face Al Ittihad in the first leg of the encounter on August 5 in Al Maktoum Stadium in Dubai, the UAE, and play the Saudi team on August 12 in the second leg at the Grand Hamad Stadium in Doha, Qatar.