Female Catholic Chaplains?
Can a woman become a Catholic chaplain?
Yes and no.
Yes, in the sense that, in the secular world, the term chaplain is used to describe someone who is in charge at that organization for a particular group's spiritual care. In this case, it would be a situation where a layperson would be named "chaplain" by the organization itself (e.g., a hospital or prison). A woman can hold the role of a lay Catholic chaplain in such a scenario. However, neither she nor a male lay "chaplain" should ever attempt to fulfill a role that simulates the role of Catholic clergy.
No, in the sense that it would not be an official Church position. The Code of Canon Law (can. 564) defines a chaplain as a priest appointed by the local ordinary for the spiritual care of a particular group. It involves the granting of faculties and sacramental responsibility. To hold an official position as a chaplain within the Church, one must be a priest. Not even a deacon may be appointed a chaplain by the bishop.