Lamina may refer to:
- Lamina of the vertebral arch
- Planar lamina, a two-dimensional planar closed surface with mass and density, in mathematics
- Lamina face, a face sharing all edges, in computer graphics
- A thin plate, sheet or layer, such as:
- Lamina (algae), a structure in seaweeds
- Basal lamina, a structure of a living cell
- Nuclear lamina, another structure of a living cell
- The flat part of a leaf, an organ of a plant.
- A thin layer of sediment in sedimentary rocks and soils
- Laminae, a part of the horse hoof
- Lamina, a genus of the intertidal spider
- Lamina VPN, a provider of internet security
- Lamina.fi skateboard shop, a skateboard shop and manufacturer in Finland
- Lamia, a creature from Basque mythology.