Mercatorbrunnen, Renaissance fountain in Burgplatz, Duisburg, Germany

Mercatorbrunnen is a fountain in Burgplatz featuring a statue of cartographer Gerhard Mercator as its central element, with four cherubs positioned around it. Each cherub represents one of four concepts: navigation, science, trade, and industry, creating a symbolic composition that honors the subject's achievements.

The sandstone fountain was built in 1878 for the 300th anniversary of Mercator's Great Sea Chart, on Burgplatz beside the town hall and old market. Mercator, born in Rupelmonde in 1512, moved to Duisburg in 1552 after heresy suspicions in Leuven and died there in 1594. The Düsseldorf sculptor Anton Joseph Reiss (1835–1900) made the monument.

The fountain stands beside Duisburg's town hall and old market, following the medieval custom of placing monuments in market squares. Its four children around the pedestal personify trade, industry, science and navigation, the fields shaped by Mercator's work. Four dolphins at the base spout water.

The fountain stands at Burgplatz 1 in central Duisburg and remains accessible year-round without restrictions. Nearby public transportation hubs provide convenient ways to reach the location from other parts of the city.

The fountain was built for the 300th anniversary of Mercator's Great Sea Chart, published in 1585. Four dolphins at the base spout water, and four columns above them carry the two-metre figure of the cartographer, who looks down at a globe.