Jack M. Ciattarelli (born December 12, 1961) is an American politician and businessman. He was the Republican nominee for governor in the 2021 New Jersey gubernatorial election.
Ciattarelli was in the New Jersey General Assembly from 2011 to 2018. He is a Republican. He finished second in the primary race for governor in 2017, to Kim Guadagno.
Ciattarelli won the Republican gubernatorial nomination on June 8, 2021. He ran against Democratic Governor Phil Murphy in the general election on November 2. He narrowly lost the election to Governor Murphy, in a race that was closer than expected. Shortly afterwards, he said he would run for governor again in 2025.