Alp may refer to:
Alpha Centauri (α Centauri, abbreviated Alpha Cen, α Cen) is the closest star system to the Solar System, being 4.37 light-years (1.34 pc) from the Sun.
Alpha Phi Alpha Fraternity, Inc. (ΑΦΑ) is the first African-American, intercollegiate Greek-lettered fraternity.
The Alps (/ælps/; French: Alpes [alp]; German: Alpen [ˈalpən]; Italian: Alpi [ˈalpi]; Romansh: Alps; Slovene: Alpe [ˈáːlpɛ]) are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately 1,200 kilometres (750 mi) across eight Alpine countries: Austria, France, Germany, Italy, Liechtenstein, Monaco, Slovenia, and Switzerland.
The alpha helix (α-helix) is a common motif in the secondary structure of proteins and is a righthand-coiled or spiral conformation (helix) in which every backbone N-H group donates a hydrogen bond to the backbone C=O group of the amino acid located three or four residues earlier along the protein sequence.
An alphabet is a standard set of letters (basic written symbols or graphemes) that is used to write one or more languages based upon the general principle that the letters represent phonemes (basic significant sounds) of the spoken language.
Alpha Kappa Alpha (ΑΚΑ) is a Greek-lettered sorority, the first established by African-American college women.
AlphaGo versus Lee Sedol, or Google DeepMind Challenge Match, was a five-game Go match between 18-time world champion Lee Sedol and AlphaGo, a computer Go program developed by Google DeepMind, played in Seoul, South Korea between 9 and 15 March 2016. AlphaGo won all but the fourth game; all games were won by resignation.
Spetsgruppa "A", also known as Alpha Group (a popular English name), or Alfa, whose official name is Directorate "A" of the FSB Special Purpose Center (TsSN FSB), is an elite, stand-alone sub-unit of Russia's special forces.