The Vympel R-27 (NATO reporting name AA-10 Alamo) is a family of air-to-air missile developed by the Soviet Union. It remains in service with the Russian Air Force, air forces of the Commonwealth of Independent States and air forces of many other countries as standard medium range air-to-air missile even though they have the more advanced R-77.

The R-27 is manufactured in infrared-homing (R-27T, R-27ET),[9] semi-active-radar-homing (R-27R, R-27ER),[10] and active-radar-homing (R-27EA)[11] versions. R-27 family missiles are produced by both Russian and Ukrainian manufacturers. The R-27 missile is carried by the Mikoyan MiG-29 and Sukhoi Su-27 family fighters. The R-27 missile is also license-produced in China,[citation needed] though the production license was bought from Ukraine instead of Russia.