Peak may refer to:

Arts and Fashion

  • The British English term for the part of a hat known as the visor in American English
  • Peak Practice, a British television drama series
  • Peak Performance, a sports clothing brand from Sweden
  • Peak, a sneakers brand from China


  • PEAKS (software) - a proteomic mass spectrometry software, used to identify and quantitate proteins/peptides.
  • BIAS Peak – a professional audio editing program on the Apple platform

Geography and geology

  • A mountain peak, see summit (topography)
  • Hubbert peak theory or peak oil, a theory that oil production worldwide is expected to reach a maximum level after which it will decline
    • More specifically, a pyramidal peak, a mountaintop that has been sculpted by erosion to form a point

Mathematics and Physics

  • The highest, or sometimes the highest and lowest (see peak-to-peak), points on a varying waveform
  • Peak electricity usage times or peak demand, see Energy demand management
  • Peak (geometry), an (n-3)-dimensional element of a polytope


  • Peak (pharmacology) or when a drug reaches its maximum plasma concentrations


  • Peak experiences


  • Another name for the rush hour
  • The highest corner of a four-sided, fore-aft sail
  • A nicknamed used to refer to the British Rail Class 44 diesel locomotives, and also classes 45 and 46

As a proper noun

  • Peak Sport, Chinese sports apparel manufacturer
  • Peak Records, a record label
  • Peak to Peak Charter School

Proper geographical names include:

  • Peak District in the Midlands of England
  • Pikes Peak in Colorado, United States
  • Victoria Peak in Hong Kong
  • Peak, a village in Ya Tung, Cambodia
  • Peak Castle, Derbyshire

Book title

  • Peak (novel), written by Roland Smith.

Famous quotes containing the word peak:

    In the mountains the shortest route is from peak to peak, but for that you must have long legs. Aphorisms should be peaks: and those to whom they are spoken should be big and tall of stature.
    Friedrich Nietzsche (1844–1900)

    In all things I would have the island of a man inviolate. Let us sit apart as the gods, talking from peak to peak all round Olympus. No degree of affection need invade this religion.
    Ralph Waldo Emerson (1803–1882)

    Sleep shall neither night nor day
    Hang upon his penthouse lid;
    He shall live a man forbid;
    Weary sev’n-nights, nine times nine,
    Shall he dwindle, peak and pine;
    Though his bark cannot be lost,
    Yet it shall be tempest-tossed.
    William Shakespeare (1564–1616)