Renault 21 je francuski automobil marke Renault. Proizvodi se od 1986. do 1995. godine.
Motori 1.4 L, 51 kW (69 KS) 1.7 L, 54 kW (73 KS) 1.7 L, 55 kW (75 KS) 1.7 L, 66 kW (90 KS) 1.7 L, 68 kW (92 KS) 1.7 L, 70 kW (95 KS) 2.0 L, 88 kW (120 KS) 2.0 L, 99 kW (135 KS) 2.0 L turbo, 119 kW (162 KS) 2.0 L turbo, 129 kW (175 KS) 2.2 L, 79 kW (107 KS) 1.9 L dizel, 47 kW (64 KS) 2.1 L dizel, 48 kW (65 KS) 2.1 L turbo dizel, 65 kW (88 KS)
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