Level

Level or levels may refer to:

Engineering

Level (optical instrument), a device used to measure true horizontal or relative heights
Spirit level or bubble level, an instrument designed to indicate whether a surface is horizontal or vertical
Canal pound or level
Regrading or levelling, the process of raising and/or lowering the levels of land
Storey or level, a vertical unit of a building or a mine
Level (coordinate), vertical position
Horizontal plane parallel

A quantity, generally
Level (algebra), the lowest number of squares that sum to $-1$ in a field
Level (logarithmic quantity), a logarithmic measure defined as the logarithm of a ratio of two like quantities
Level, the different values that a categorical variable can have
Level, the different values that a factor can have in factor analysis
Level, the different treatments that are applied within a factor in the design of experiments

Level (airline brand), a pan-European airline brand
Level (magazine), a video game magazine in the Czech Republic, Romania, and Turkey
Level Vodka, a brand of vodka
Level, a collection of objects with the same rank in an overlapping hierarchy
Level, a layer of defense in two-level defense in American football
Level, an indication of the number of previous posts to a forum thread
LEVEL, a website for men of color published by Medium
The Level (TV series)