Dorsa Argand is a wrinkle ridge system at 28°06′N 40°36′W﻿ / ﻿28.1°N 40.6°W﻿ / 28.1; -40.6 on the Moon, in Oceanus Procellarum near the border with Mare Imbrium. It is approximately 109 km in length and was named after Émile Argand in 1976. The name of the feature was approved by the IAU in 1976.[1]