Le Soleil de Langres, Stainless steel sculpture beside the A31 motorway in Mardor, France.

Le Soleil de Langres is a monumental stainless steel sculpture by Louis Leygue, installed in 1983 on the Langres plateau in the commune of Mardor. It measures 15 metres high, 5 metres wide and 4.5 metres deep, and depicts the sun and its rays in stylised form. The choice of steel lets sunlight reflect off the work.

The sculpture was commissioned in 1982 by SAPRR, the motorway concession company, and funded through the 1% artistique scheme tied to the construction of the A31 between Montigny-le-Roi and Til-Châtel. It was inaugurated on 28 June 1983 by Interior Minister Gaston Defferre, together with the new motorway section.

The sculpture's name refers to the sun it stylizes, greeting drivers heading from northern and eastern Europe toward the Mediterranean. Sociologist Martin de La Soudière saw it as a humorous reply to Langres's reputation as one of France's coldest cities. The stainless steel was chosen so the sun reflects off the work.

The sculpture is easily visible from the motorway and can be seen from several exit points. Visitors should know that the best views come from the moving vehicle or from an authorized stopping area nearby.

The sculpture was commissioned in 1982 by SAPRR, the motorway concession company, and funded through the 1% artistique scheme tied to the A31 section between Montigny-le-Roi and Til-Châtel. It was inaugurated on 28 June 1983 by Interior Minister Gaston Defferre, together with that stretch of road.