Frankfurt am Main I is an electoral constituency (German: Wahlkreis) represented in the Bundestag.

It is located in southern Hesse, comprising the western part of the city of Frankfurt am Main.

Originally, the constituency comprised the Stadtbezirke of Oberrad, Sachsenhausen, Niederrad, Goldstein, Schwanheim, Griesheim, Nied, Höchst, Sindlingen, Zeilsheim, Unterliederbach, and Sossenheim from the city of Frankfurt am Main.

In the 1976 through 1998 elections, it comprised the Stadtbezirke of Rödelheim, Hausen, Praunheim, Schwanheim, Goldstein-West, Griesheim, Nied, Höchst, Sindlingen, Zeilsheim, Unterliederbach, and Sossenheim from the city of Frankfurt am Main, as well as the municipalities of Bad Soden, Eschborn, Hattersheim, Kriftel, Liederbach, Schwalbach am Taunus, and Sulzbach (Taunus) from the Main-Taunus-Kreis district.

Georg Leber regained it for the SPD in 1965 and served until 1976, when he was succeeded by Karsten Voigt.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.