Land drainage may refer to:
- Surface drainage of the land
- Drainage system (geomorphology), pattern of natural drains, streams, rivers, etc.
- Land drainage - a legal and operational term in the UK to define a range of functions and responsibilities of drainage boards.
- Surface runoff, surface runoff of excess rainfall from the land
- Drainage system (agriculture), land forming or land shaping to enhance the drainage from the soil surface in agricultural land
- Contour plowing, controlling runoff and soil erosion
- Subsurface (groundwater) drainage
- Horizontal drainage by pipes and ditches
- Vertical drainage by wells