The Kaliningrad K-8 (R-8) (NATO reporting name AA-3 'Anab') was a medium-range air-to-air missile developed by the Soviet Union for interceptor aircraft use.
The K-8 was developed by OKB-339/NII-339 (currently Phazotron NIIR). The infrared seeker was developed by TsKB-589 GKOT (currently TsKB Geofizika), who also developed the seeker for 9M31 missile of 9K31 Strela-1.
An inert training version was also developed, designated UR-8M.