Gani Lawal scored 29 points to lead No. 22 Georgia Tech and Derrick Favors had 14 points. Glen Rice added 11 and Mfon Udofia and Maurice Miller had 10 each for the Yellow Jackets (7-1) in their first true road game of the season.
Chattanooga trimmed a 16-point deficit to six before the Yellow Jackets closed the first half on a 13-0 run to take a 52-33 lead.
Georgia Tech controlled the second half, never leading by less than 15 points. The Yellow Jackets shot 60.8 percent from the field, including 43.8 percent from 3-point range.