The players were ruled out Friday, even though Allen (knee) got limited work at practice this week.
Coleman (ribs) will miss his second straight game. Tamme (concussion) was hurt in last week's victory at Dallas and has yet to be cleared.
The Falcons (3-0) will also be without return specialist Devin Hester, who has yet to play this season because of turf toe.
Linebacker Brooks Reed is expected to get his first action of the season after recovering from groin surgery. Star receiver Julio Jones (toe and hamstring) and running back Devonta Freeman (toe) are also probable after fully participating in Friday's practice.