Fetch may refer to:

• Fetch (geography), the length of water over which a given wind has blown
• Fetch (game), a game played between a human and a pet in which the human throws an object for the pet to retrieve
• Fetch (folklore), a doppelgänger or double in Irish folklore
• Fetch, a software FTP client—see Comparison of FTP client software
• Fetch! with Ruff Ruffman, a children's animated television series
• Fetch-execute cycle, a typical sequence of computer machine actions

Fetch! with Ruff Ruffman, sometimes shortened as Fetch!, is a children's television series for children ages 6–12 on PBS during the PBS Kids Go! block of educational programming. It is a game show/reality show that is hosted by an animated anthropomorphic dog who dispenses challenges to the show's real-life contestants. The series ran for five seasons and 100 episodes from May 29, 2006 to November 4, 2010 on PBS. It was announced in June 2010 by WGBH that due to lack of funding that the series would end. In June 2008, the series received its first Emmy for Best Original Song for its theme.

Als Fetch (auch Windlauflänge oder Wirkweg) wird die Länge der Anlaufstrecke eines Windes über einer Wasserfläche bezeichnet.

Le fetch est la distance en mer ou sur un plan d'eau au dessus de laquelle souffle un vent donné sans rencontrer d'obstacle (une côte) depuis l'endroit où il est créé ou depuis une côte s'il vient de la terre.

Fetch är en FTP-klient till Mac OS som skapades 1989 av Jim Mathews, som var anställd på Dartmouth College. Senare vidareutvecklade Mathews programmet i sitt eget företag Fetch Softworks.

Il Fetch o Instruction Fetch (dall'inglese, prendere, prelevare), è la prima delle quattro fasi fondamentali dell'elaborazione sequenziale di un programma per calcolatori elettronici. Si tratta dell'astrazione procedurale di tutte quelle operazioni che portano al caricamento dell'istruzione da parte del microprocessore.