Andromeda nebula may refer to:

• Andromeda Galaxy, a spiral galaxy in the Andromeda constellation
• Andromeda (novel), a 1957 science fiction novel by Ivan Efremov
  • The Andromeda Nebula, a 1967 Soviet film based on the above novel

• Discrete Tchebyscheff polynomials
• Discrete time and continuous time
• Discrete-time filter
• Discrete-time stochastic process
• Discrete two-point space
• Discrete Universal Denoiser
• Discrete Wireless Inc.
• Discretion (album)
• Discretionary account
• Discretionary Housing Payment
• Discretionary hyphen
• Discretitheca
• Discretitheca nepalensis
• Discretization of Navier-Stokes equations
• Discretization of Navier–Stokes equations
• Discriminant of a point
• Discrimination against African-Americans
• Discrimination against Asian American
• Discrimination against atheists and agnostics
• Discrimination against atheists in Europe
• Discrimination against atheists in Nazi Germany
• Discrimination against atheists in the United States
• Discrimination against Chinese Indonesians
• Discrimination against Dalits
• Discrimination against Ethiopian Jews in Israel