The IWI Tavor TAR-21 is an Israeli bullpup assault rifle chambered in 5.56×45mm NATO caliber with a selective fire system, selecting between semi-automatic mode and full automatic fire mode. The Tavor is designed and produced by Israel Weapon Industries (IWI). It is produced in two main variants: the TAR-21 and the CTAR-21.

Built around a long-stroke piston system (as found in the M1 Garand and AK-47), the Tavor is designed to maximize reliability, durability, simplicity of design, and ease of maintenance, particularly under adverse or battlefield conditions.

In 2009, the Tavor X95 (also known as the Micro Tavor or MTAR) was selected by the Israel Defense Forces to gradually replace the M16 assault rifle and M4 carbine variants as the standard-issued weapon of the Israeli infantry by the end of 2018. The first X95 bullpup rifles were issued to infantry units in 2013. Both the TAR-21 and X95 are part of the Tavor family of rifles, along with the Tavor 7.

In the beginning of September 2021, there were conflicting reports in Israeli media whether the IDF was planning to end further acquisition of the Tavor and Micro and replace it with M4s for front-line units. On 7 September, a report was published on the IDF's Hebrew website that the IDF plans to continue acquiring the Micro Tavor and equipping combat units with it.