This is the first adaptation of a Richard Stark/Parker novel to use the character name Parker, the name from the novels. Although the following movies are based on the "Parker" novels, the name was always changed: Point Blank (1967) (Walker); The Split (1968) (McClain); The Outfit (1973) (Macklin); Slayground (1983) (Stone); and Payback (1999) (Porter).
The first Parker film since author Donald E. Westlake's death in 2008. Westlake is credited under his famous pseudonym Richard Stark, under which he wrote all of the Parker novels.
A sex scene was shot between Jennifer Lopez and Jason Statham which is not in the theatrical release.
Parker calls his girlfriend and her phone displays a caller ID of (504) 723-2343, which a Google search reveals to be the phone number of a Louisiana film crew person with the last name of Parker (who doesn't appear to have worked on this movie).
Director Hackford tells in the DVD bonus film commentary that the heist sequence was shot half in Ohio and the other half in Louisiana, because the fire sequence could not have been made in the middle of the actual Ohio State Fair crowd. They used extras for the fire sequence in Louisiana and the actual crowd in Ohio.