Financial terms were not disclosed, per team policy.
Brand, 34, averaged seven points and six rebounds in 21 minutes per game last season for the Dallas Mavericks.
“Elton brings a veteran presence both on and off the court and is a welcomed addition to our locker room,” Hawks president of Basketball Operations and general manager Danny Ferry said. “His ability to play center or power forward will give our frontcourt a great deal of versatility and we think he will be an outstanding fit to our program.”
SI.COM: NBA Free agency tracker The No. 1 overall pick by Chicago in the 1999 NBA Draft has enjoyed a productive 14-year career with the L.A. Clippers, Philadelphia 76ers and Dallas Mavericks, averaging 17.4 points, 9.1 rebounds, 2.2 assists and 1.8 blocks in 35.2 minutes.