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 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
See also Insert.