A nameplate assembly for a bag has a base, a nameplate and at least one connecting unit, the nameplate is disposed in an accommodating recess of the base, and the at least one connecting unit is mounted in at least one connecting recess of the base. The nameplate is connected and fixed on the base by the connecting unit. The base further includes a pressing recess formed in an end of the accommodating recess, the nameplate extending to a position above the pressing recess. The nameplate can be easily mounted on the base by the magnetic force from the connecting unit and can be easily removed by being pressed into the pressing recess. Therefore, the nameplate assembly is efficient in manufacturing and is easy to use.