Snark may refer to:

• Snark (Lewis Carroll), a fictional animal in Lewis Carroll's "The Hunting of the Snark" (1876)
• Jack London's yacht The Snark, described in the 1911 book The Cruise of the Snark
• Snark (graph theory), a type of graph
• SM-62 Snark, an intercontinental nuclear cruise missile
• Snark sailboat, a small, inexpensive, and lightweight sailboat
• MV The Second Snark, a historic shipyard tender, now in service as a cruise boat and ferry
• Corporal Snark, a minor character in Joseph Heller's novel Catch-22 (1961)
• Snark (punctuation), a proposed ligature to be adopted as an English language "irony mark"
• SNARK theorem prover
• Snark (Half-Life), a small, fictional bug-like species of alien used as a weapon in the computer game Half-Life
• Snark (game), an early 1970s text-based computer game from People's Computer Company
• Snark (diving regulator), a tradename for an early single-hose diving regulator
• Zn'rx, a race of fictional aliens in Marvel Comics publications, commonly referred to as "Snarks"
• Snark (software), an Open Source BitTorrent client.