- m-semilattice
- m-sequence
- M-space
- M-symmetric modular pair
- m-system
- M-test
- Muckenhoupt's condition
- mulli-permutation
- multi-band proof expression
- multi-beam echo sounding system
- multi-collinearity
- multicollinearity
- multicolour photometry
- multicriteria decision making problem of group
- multicriteria decision rule
- multidecision problem
- multidimensional contingency table
- multidimensional distribution function
- multidimensional hypergeometric distribution
- multidimensional optimum seeking method
- multidimensional point process
- multidimensional random sample
- multidimensional random variable
- multidimensional stationary process
- multi-dimensional wavelet