Cycle, cycles, or cyclic may refer to:

Anthropology and social sciences

* Cyclic history, a theory of history * Cyclical theory, a theory of American political history associated with Arthur Schlesinger, Sr. * Social cycle, various cycles in social sciences ** Business cycle, the downward and upward movement of gross domestic product (GDP) around its ostensible, long-term growth trend

Arts, entertainment, and media

Films

* Cycle (2008 film), ''Cycle'' (2008 film), a Malayalam film * Cycle (2017 film), ''Cycle'' (2017 film), a Marathi film

Literature

* Cycle (magazine), ''Cycle'' (magazine), an American motorcycling enthusiast magazine * Literary cycle, a group of stories focused on common figures

Music

Musical terminology

* Cycle (music), a set of musical pieces that belong together **Cyclic form, a technique of construction involving multiple sections or movements **Interval cycle, a collection of pitch classes generated from a sequence of the same interval class **Song cycle, individually complete songs designed to be performed in a sequence as a unit

Albums

* Cycle (album), ''Cycle'' (album), a 1965 album by the Paul Horn Quintet * ''Cycle'', a 2003 album by Masami Akita discography, Merzbow * ''Cycle'', a 2014 album by Buckethead discography, Buckethead * Cycles (Cartel album), ''Cycles'' (Cartel album), 2009 * Cycles (David Darling album), ''Cycles'' (David Darling album), 1981 * Cycles (The Doobie Brothers album), ''Cycles'' (The Doobie Brothers album), 1989 * Cycles (Frank Sinatra album), ''Cycles'' (Frank Sinatra album), 1968 * Cycles (Redbone album), ''Cycles'' (Redbone album), 1977 * ''Cycles'', a 2021 album by Sam Teskey

Songs

* Cycles (song), "Cycles" (song), a 2018 song by Tove Lo * "Cycle" an interlude by Beck from ''Morning Phase'', 2014

Science, technology, and mathematics

Biology

* Cycle (gene), a gene in Drosophila melanogaster that encodes the CYCLE protein * Cyclic flower, in botany, one way in which flower parts may be arranged * Menstrual cycle

Computing

* Cycles, a render engine for the software Blender (software), Blender * Instruction cycle, the time period during which a computer processes a machine language instruction * Reference cycle, where a software object refers directly or indirectly to itself

Mathematics

* Cycle (algebraic topology), a simplicial chain with 0 boundary * Cycle per second, a unit of frequency, the modern equivalent being hertz * Cycle (graph theory), a nontrivial path in a graph from a node to itself ** Cycle graph, a graph that is itself a cycle ** Cycle matroid, a matroid derived from the cycle structure of a graph * Cycle (sequence), a sequence with repeating values ** Cycle detection, the algorithmic problem of detecting eventual repetitions in sequences generated by iterated functions * Cycle, a set equipped with a cyclic order ** Necklace (combinatorics), equivalence classes of cyclically ordered sequences of symbols modulo certain symmetries * Cyclic (mathematics), a list of mathematics articles with "cyclic" in the title * Cyclic group, a group generated by a single element * Cyclic permutation, a basic permutation (all permutations are products of cycles)

Other uses in science and technology

* Charge cycle, charging and discharging a rechargeable battery * Thermodynamic cycle, a sequence of processes that involve transfer of heat and work into and out of a system * Cyclic, a primary Helicopter flight controls#Cyclic, flight control for helicopters * Cyclic compound

Vehicles

* Bicycle * Motorcycle * Quadricycle * Tricycle * Unicycle

Other uses

* Cycling, a sport * Cycle (baseball), a single, double, triple, and home run (in any order) by the same player in one game * Cycle, North Carolina, a community in the United States