The pair were charged "with a terrorist act and participation in the activities of a terrorist group", while five others detained at the weekend were freed without charge, the prosecutor's office said in a statement.
It did not give the names of the people who were charged.
One of those released was Mohamed Abdeslam -- whose brother Brahim took part in the attacks and whose other brother Salah is being hunted by police.
The prosecutors confirmed that a major police raid in Brussels today aimed at arresting Salah Abdeslam had ended without anyone being detained.