Named after Sundgauer Straße, which recalls the Sundgau in southern Alsace.
The halt was planned as Zehlendorf Ost, but shortly before it opened on 1 July 1934 it was named after Sundgauer Straße instead. The choice was meant to recall the Sundgau, a hilly region in southern Alsace that had to be ceded to France in 1919. Its name goes back to the medieval ‘Südgau’ (southern district), the southern half of Alsace.