Connection, connected, connectivity, or connexion may refer to:

Mathematics

• Connection (mathematics), a way of specifying a derivative of a geometrical object along a vector field on a manifold
• Levi-Civita connection, used in differential geometry and general relativity, differentiates a vector field along another vector field
• Connection (vector bundle) differentiates a section of a vector bundle along a vector field
• Connection form a manner of specifying a connection using differential forms
• Connection (principal bundle) gives the derivative of a section of a principal bundle
• Ehresmann connection gives a manner for differentiating sections of a general fibre bundle
• Cartan connection, a connection which is achieved by identifying tangent spaces with the tangent space of a certain model Klein geometry
• Connectedness, in mathematics, a property of a topological space, graph or category (with different meanings)
• Connected category, a category in which, for every two objects, there is at least one morphism connecting them
• Connected space, a topological space which cannot be written as the disjoint union of two or more nonempty open spaces
• Connectivity (graph theory)
• Connected sum
• Galois connection, a type of correspondence between two partially ordered sets, modeled on the correspondence between subgroups of a Galois group and intermediate fields of the field extension.

Technology

• The effect of a fastener
• Connections (game)
• Electrical connection, allows the flow of electrons
• Interconnectivity, in science, the redundant interaction of many small parts to form a greater whole.
• Landscape connectivity
• Telecommunication circuit, the complete path between two terminals
• Connections (The Entertainment Technology Magazine)
• Computer network connections:
• Database connection
• Virtual connection
• Connection-oriented
• Connectionless
• Connectivity (computer science)

Music

• Connected (Stereo MC's album) is a 1992 album by the Stereo MC's
• "Connected" (Stereo MCs song) is a 1992 song by the Stereo MC's
• Connected (Foreign Exchange album) is an album by The Foreign Exchange
• "Connected" (Ayumi Hamasaki song), a song by Ayumi Hamasaki
• "Connected" (RBD song), a song by RBD
• "Connection" (Elastica song), a song released by the britpop group Elastica
• "Connection (Rolling Stones song)", a song by the Rolling Stones
• "Connected" (Hoobastank song), a song by Hoobastank
• Connection (dance), the primary means of communication between the lead and follow
• "Connection", a song by Avail from their 1992 album Satiate
• Connect Music Festival, which is held in Inveraray, Scotland