Grendel is the antagonist in the Anglo-Saxon epic poem Beowulf.

Grendel or Grendal may also refer to:

In literature: "Grendel" (short story) by Larry Niven, written in 1968 Grendel (novel), by John Gardner (1971) that retells Beowulf from Grendel's point of view Grendel (comics), a long-running series by Matt Wagner that started in the 1980s, featuring a fictional assassin called Grendel Grendel (Marvel Comics), an alien symbiote appearing in Marvel Comics Grendels, predatory alien species in the science-fiction novels The Legacy of Heorot (1987) and Beowulf's Children (1995)

In music: Grendel (band), a Netherlands-based dark electro/hard EBM band Grendel (opera), an opera composed by Elliot Goldenthal and directed by Julie Taymor "Grendel", a song by Marillion, B-side to their first single "Market Square Heroes" "Grendel", a song on the album Diary by Sunny Day Real Estate

In media: Grendel (film), a made-for-television motion picture adaptation of the Beowulf poem produced by the Sci Fi Channel Grendel Grendel Grendel, a 1981 animated film based on John Gardner's novel and starring Peter Ustinov Beowulf & Grendel, a 2005 film Grendel, the Holy City in the Scrapped Princess anime

In computing: Grendel, a species in the artificial life computer program Creatures Mozilla Grendel, a Java-based e-mail and Usenet client The NSDF designation given to the Soviet bomber class ship in Battlezone Grendal, a character in the computer game Mace: The Dark Age Grendel, a character in the computer game Warframe

People: Erik Grendel, Slovak footballer Gábor Grendel, Slovak politician Lajos Grendel, Slovak writer (1948 – 2018) Grendel Briarton, pseudonym for author Reginald Bretnor

Other uses: Grendel, a superheavyweight combat robot in BattleBots 6.5mm Grendel, a rifle cartridge developed by Alexander Arms Grendel Inc., a United States firearms manufacturer which produced among others: Grendel P30 Grendel S16 Grendel's Den, a bar and restaurant in Cambridge, Massachusetts, U.S. Mount Grendal, a mountain in Antarctica

See also Beowulf (disambiguation) List of artistic depictions of Grendel