In anatomy, basal plate may refer to:

• the portion of the neural tube ventral to the sulcus limitans; see Basal plate (neural tube)
• the portion of the decidua basalis in the placenta; see Basal plate (placenta)
• the fused parachordal cartilages that give rise to the occipital bone

In botany, the term refers to the basal portion of a bulb. This portion is a modified stem, from which roots, bulb scales, and new leaves or stems develop.