Lockheed D-21
[ar] لوكهيد دي-21
[de] Lockheed D-21
[es] Lockheed D-21
[fa] لاکهید دی-۲۱
[fr] Lockheed D-21
[id] Lockheed D-21
[it] Lockheed D-21/M-21
[ja] D-21 (航空機)
[pl] Lockheed D-21
[ro] Lockheed D-21/M-21