C31 or C-31 may refer to:

Vehicles

Fokker C-31A Troopship The Fokker F27 Friendship is a turboprop airliner developed and manufactured by the Dutch aircraft manufacturer Fokker. It is the most numerous post-war aircraft manufactured in the Netherlands; the F27 was also one of the most successful Euro ...

, a Dutch military transport * , a C-class submarine of the Royal Navy *

Nissan Laurel C31 The Nissan Laurel is a front-engine, rear-drive two- and four-door sedan manufactured and marketed by Nissan from 1969 to 2002. Introduced in 1968 as a new model positioned above the 1968 Datsun Bluebird 510, the Laurel offered the luxury of the ...

, a Japanese sedan *

Sauber C31 The Sauber C31 was a Formula One racing car designed by Sauber for use in the 2012 Formula One season. The car was driven by Kamui Kobayashi and Sergio Pérez. Technical director James Key announced that he was leaving the team just four days b ...

, a Swiss Formula One car

Other uses

Blackstripe corydoras The blackstripe corydoras or Bond's catfish (''Corydoras bondi'') is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Yuruar� ...

, a tropical freshwater fish *

C-31 highway (Spain) C-31 or Eix Costaner is one of Catalonia's primary highways. It is the result of merging several sections of previously existing roads, '' autopistas'' and ''autovías'' after the 2004's renaming of primary highways managed by the Generalitat de C ...

, in Catalonia *

C31 road (Namibia) The C31 is a secondary route in Namibia that runs 190 kilometers from the Okahandja Okahandja is a city of 24,100 inhabitants in Otjozondjupa Region, central Namibia, and the district capital of the Okahandja electoral constituency. It is kn ...

Bill C-31 Bill C-31 may refer to the following bills: *" An Act to Amend the Indian Act", a 1985 act amending the Canadian ''Indian Act'' *''An Act to Amend the Canada Elections Act and the Public Service Employment Act'', a 2007 act *"Protecting Canada's Im ...

, various legislation of the Parliament of Canada *

Caldwell 31 Caldwell may refer to: People * Caldwell (surname) * Caldwell (given name) * Caldwell First Nation, a federally recognized Indian band in southern Ontario, Canada Places Great Britain * Caldwell, Derbyshire, a hamlet * Caldwell, East R ...

, an emission/reflection nebula *

Channel 31 (disambiguation) Channel 31 refers to several television stations: Australia The colloquial name for certain community television stations in Australia * Access 31 * Hitchhike TV, formerly 31 Digital * C31 Melbourne * Channel 31 (Sydney) * Channel 44 (Adelaide) ...

* King's Gambit, Falkbeer Countergambit, a chess opening * C31, a London Cycleway {{Letter-NumberCombDisambig