The Jets re-signed Cromartie to a four-year, $32 million contract on August 1, 2011. In the home opener against the Dallas Cowboys on September 11, Cromartie gave up two touchdowns to Dez Bryant and Miles Austin but rebounded the following week intercepting two passes by Luke McCown. Cromartie was named the AFC Defensive Player of the Week for his performance against the Jaguars. In Week 3 against the Oakland Raiders, Cromartie committed four errant penalties for 46 total yards. He later fumbled a kickoff return which resulted in a turnover that led to a Raiders go-ahead touchdown. He left the game in the second half and was transported to Eden Medical Center where he was diagnosed with bruised ribs and a pulmonary contusion.