Trailer may refer to: a

Transportation

* Trailer (vehicle), an unpowered vehicle pulled by a powered vehicle ** Bicycle trailer, a wheeled frame for hitching to a bicycle to tow cargo or passengers ** Full-trailer ** Semi-trailer **Horse trailer and other trailers designed to haul livestock **Travel trailer, or caravan, a type of recreational trailer designed to provide sleeping space ** Boat trailer to carry small boats ** Baggage trailer, a large Flatbed trolley#Baggage trolley, baggage trolley * Semi-trailer truck

Shelter

* Mobile home, a relocatable housing unit with wheels and hitch * Portable classroom, a temporary classroom for schools with insufficient building capacity - not technically a trailer due to lack of wheels or hitch. This temporary shelter can be relocated with a trailer, but by definition the structure itself is not a trailer. * Construction trailer, relocatable temporary accommodation with wheels and hitch used for offices and building materials storage on construction sites

Computing

* Trailer (computing), data appended to a main block of data to facilitate its processing

Multimedia

* Trailer (promotion), an advertisement, usually in the form of a brief excerpt or string of excerpts, for a media work. ** Teaser campaign, Teaser trailer, a truncated version of a trailer meant to "tease" an upcoming work.

Music

* Trailer (album), ''Trailer'' (album), a 1994 album from the Northern Irish musical group Ash *''Tráiler'', 2018 extended play by Spanish singer Aitana {{disambiguation