Gregory Ducre (born January 22, 1992) is an American football cornerback for the Pittsburgh Steelers of the National Football League (NFL). He played college football at the University of Washington. He signed with the San Diego Chargers as an undrafted free agent in 2014.
San Diego Chargers
On May 10, 2014, Ducre signed with the San Diego Chargers after going unselected in the 2014 NFL Draft.  He was waived by the team on August 30 for final roster cuts, but was signed to their practice squad the next day. 
The Washington Redskins signed Ducre off the Chargers' practice squad on October 8, 2014. He recorded his first career interception against San Francisco 49ers quarterback Colin Kaepernick after filling in for an injured Tracy Porter, who started in place for an inactive David Amerson.  He was released by the team on December 9, 2014.
Second stint with Chargers
After being released by the Redskins, the Chargers signed Ducre to their practice squad. He was promoted to the active roster on December 15, 2014.