An inbred corn line, designated BB46, is disclosed. The invention relates to the seeds of inbred corn line BB46, to the plants and plant parts of inbred corn line BB46 and to methods for producing a corn plant, either inbred or hybrid, by crossing inbred corn line BB46 with itself or another corn line. The invention further relates to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic plants produced by that method and to methods for producing other inbred corn lines derived from inbred corn line BB46.