Parallel may refer to:

Mathematics

• Parallel (geometry), two lines in the Euclidean plane which never intersect

• Parallel (operator), mathematical operation named after the composition of electrical resistance in parallel circuits

Science and engineering

• Parallel (latitude), an imaginary east–west line circling a globe

• Parallel of declination, used in astronomy

• Parallel, a geometric term of location meaning "in the same direction"

• Parallel electrical circuits

Computing

• Parallel computing

• Parallel (software), a UNIX utility for running programs in parallel

Language

• Parallelism (grammar), a balance of two or more similar words, phrases, or clauses

• Parallelism (rhetoric)

Entertainment

• Parallel (manga)

• Parallel (2018 film), a Canadian science fiction thriller film

• Parallel (2024 film) an American science fiction thriller film

• Parallel (video), a compilation of music videos by R.E.M.

• Parallel (The Black Dog album), 1995

• Parallel (Four Tet album)

• Parallel (EP), a 2017 EP by GFriend

• "The Parallel", an episode of the TV series The Twilight Zone

Music

• Parallel harmony, a music composition technic

• Parallel key

Other uses

• Parallel, a type of trench; see Siege#Age of gunpowder

• Avinguda del Paral·lel

• Parallel (filling stations), an operator in Ukraine's oil wholesale and retail markets

• Paral·lel station, a Barcelona Metro station

See also

• Parallels (disambiguation)

• Parallel lines (disambiguation)

• Parallel universe (disambiguation)

• Parallel World (disambiguation)