Insertion

Insertion may refer to:
 * Insertion (anatomy), the point of a tendon or ligament onto the skeleton or other part of the body
 * Insertion (genetics), the addition of DNA into a genetic sequence
 * Insertion, several meanings in medicine, see ICD-10-PCS
 * Insertion loss, in electronics
 * Insertion reaction, a chemical reaction in which one chemical entity interposes itself into an existing bond of a second chemical entity (e.g.: A + B–C → B– A –C )
 * Insertion sort, a simple computer algorithm for sorting arrays
 * Local insertion, in broadcasting
 * Insertion of a character in a string, one of the single-character edits used to define the Levenshtein distance