Mörfelden-Walldorf is a town in the Groß-Gerau district, situated in the Frankfurt Rhine-Main region in the federal state (Bundesland) Hesse, Germany.

In the 15th and 16th centuries, Mörfelden became a significant tradepost with a population of 500, but the Thirty Years' War set back the development of the village.

[1] After World War II, many refugees and expellees from Germany's former Eastern territories settled here.

From about 23 August to 24 November 1944, there was a concentration camp in Walldorf into which were brought 1,700 Jewish girls and women from Hungary to work at runway and taxiway expansion and repair at Frankfurt Airport.

Guntheim was established in Merovingian times (481 – 560) as a Frankish military colony at the junction of some old Roman roads in the forest.

Before 1933, the "bricklayers village" Mörfelden had the first Communist mayor in the state of Hesse, and was nicknamed "Little Moscow".

In the elections of March 13, 1932, the Communist candidate Ernst Thälmann received 1,737 votes in the town, against 850 for Hindenburg and just 264 for Hitler.

Once the Nazis established itself in power, 70 KPD members in the village, which had just 5,000 inhabitants at the time, were deported to the concentration camp Osthofen.

[2] At the municipal elections held on 26 March 2006, the SPD remained the strongest party despite notable losses.

Mörfelden-Walldorf's civic coat of arms might heraldically be described thus: In gules an oak tree with six leaves and three acorns argent, thereover per saltire two flails Or, entwined about which, ends downturned, a horseshoe sable.

Walldorf only began using arms in the early 19th century, at which time the mayor's chain of office bore a shield with the oak, the flails and the letter W. Much the same composition was officially adopted as the village's arms in 1927, but without the W. The oak is said to stand for the forests, especially the Dreieich Hunting Woods, and the flails are said to symbolize agriculture.