Concatenation (disambiguation)

Concatenation is a computer programming operation that joins strings together.

Concatenation may also refer to:
 * Concatenation (architecture), an architectural composition
 * Concatenation of paths, a construction in topology
 * Concatenated SMS, a way of combining multiple SMS text messages sent to cellular phones
 * Packet concatenation, a computer networking optimization that coalesces multiple packets under a single header
 * cat (Unix), a Unix command to write the contents of one or more files to the standard output
 * "Concatenation", the opening track of Swedish extreme metal band Meshuggah's album Chaosphere
 * A technical term in Christian liturgy to refer to combining services which are normally performed at different times of the day
 * A technical term in Christian liturgy to refer to combining services which are normally performed at different times of the day