The 1990 Critérium du Dauphiné Libéré was the 42nd edition of the cycle race and was held from 28 May to 4 June 1990.

The race started in Aix-les-Bains and finished in Annecy.

The race was won by Robert Millar of the Z-Tomasso team.

Sixteen teams, containing a total of 128 riders, participated in the race:[2] 28 May 1990 – Aix-les-Bains to Aix-les-Bains, 139 km (86.4 mi) 29 May 1990 – Aix-les-Bains to L'Isle-d'Abeau, 183.9 km (114.3 mi) 30 May 1990 – Annonay to Aubenas, 171 km (106.3 mi) 31 May 1990 – Vals-les-Bains to Avignon, 183 km (113.7 mi) 1 June 1990 – Avignon to Gap, 196 km (121.8 mi) 2 June 1990 – Gap to Allevard-les-Bains, 209 km (129.9 mi) 3 June 1990 – Allevard-les-Bains to Annecy, 177.5 km (110.3 mi) 4 June 1990 – Annecy to Annecy, 37.8 km (23.5 mi)