Prototypes, testing machines
Je-155R prototype MiGu-25R
Je-155P prototype MiGu-25P
Je-155M MiG-25P and three MiG-25RB used for tests with R-15BF2-300 engines
Je-155MP prototype MiG-31
Je-133 MiG-25PU with which S. Savická set world records (in the women's category)
Je-266 cover designation for Je-155R and Je-155P used in record recording
Je-266M cover designation for Je-155M used in record recording
Serial variants
MiG-25P/ PD/PDS overflow fighter
MiG-25PU two-seat training-combat version of the MiG-25P
MiG-25R reconnaissance aircraft
MiG-25RB/RBV/RBN/ RBT reconnaissance-bomber
MiG-25RU dvoumístná training-combat version of the MiG-25RB
MiG-25RBK/RBF aircraft for radio reconnaissance and interference
MiG-25RBS/ RBS aircraft for radio reconnaissance and interference
MiG-25BM aircraft for suppressing enemy air defenses