There are 10 Mikoyan Gurevich MIG 21 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1969 and 1978.
N121MG
1978 Mikoyan Gurevich MIG 21
Addison, TX
N317DM
1974 Mikoyan Gurevich MIG 21
Wilmington, DE
N711MG
1973 Mikoyan Gurevich MIG 21
Oldsmar, FL
N221MG
1969 Mikoyan Gurevich MIG 21
Wilmington, DE
N1121M
Mikoyan Gurevich MIG 21
Addison, TX
N21CZ
Mikoyan Gurevich MIG 21
Alamogordo, NM
N315RF
Mikoyan Gurevich MIG 21
Marion, SD
N321ST
Mikoyan Gurevich MIG 21
Bridgeport, TX
N6285D
Mikoyan Gurevich MIG 21
Rochester, MN
N6285L
Mikoyan Gurevich MIG 21
Hillsboro, OR