Thomas Westphal (born 22 February 1967 in Lübeck[1]) is a German economist, politician (SPD) and the lord mayor of Dortmund.

He is a long-standing co-editor of Spw – Zeitschrift für sozialistische Politik und Wirtschaft (Journal for Socialist Politics and Economy).

In this way, the entire city's demand for services such as gastronomy, hotels and retail is to be increased by tying skilled workers and trade tax revenues to Dortmund as a location.

At the Juso federal congress in Gera in May 1995 he was re-elected a one-vote majority over his opponent Stephan Grüger of the so-called Reformsozialisten (reform socialists).

At the following extraordinary federal congress of the Jusos with repeat elections in Bonn-Bad Godesberg, he renounced a new candidacy there and proposed Andrea Nahles as his successor.