Is the Atlanta Grant Park area safe to jog in at night?

Umm no. I wouldn't jog in this area at night. During the day it's totally fine. Although Grant Park is making a come back, there are still some parts of the area that need a lot of work and are not as safe. If you do jog after hours, go with a group of several people. But... all in all, I still would not recommend night jogging in this specific area. Good luck!