Bible Translators Theologians Inspector (German: Herr Inspektor) Georg Martin Grossman (18 October 1823 in Groß-Bieberau, Grand Duchy of Hesse - 24 August 1897 in Waverly, Iowa) was a German-American Lutheran pastor, academic, missionary, and church leader who founded the Iowa Synod, Wartburg College, and Wartburg Theological Seminary.

Georg Martin Grossmann was born in Groß-Bieberau, a town in the Grand Duchy of Hesse, Germany to the teacher Ludwig Großmann and his wife Maria Margaretha née Rotenhaeuser.

Grossman became strongly influenced by the mission-minded pastor Johann Konrad Wilhelm Löhe of Neuendettelsau, Bavaria, and then began a study of theology at Erlangen and later at Nürnberg.

At a conference in Saginaw, both Grossman and another Löhe missionary, Johannes Diendoerfer of the nearby Frankenhilf colony (today called Richville in Denmark Township), were made to understand that their views were creating divisions.

[1] Attempting first to move out of the nearby region, the Missouri Synod asserted that in states where it had congregations, no other Lutherans had a right to do missionary work.

Deindoerfer moved to Clayton County with some of the colonists from Michigan and they established the St. Sebald colony there (named after the patron saint of Nürnberg).

On August 24, 1854, Grossmann met with Deindoerfer at his log cabin in St. Sebald along with professor Sigmund Fitschel from Nürnberg and Micheal Schüller (who was ordained at the meeting).

Another early enterprise was in Sherrill, Iowa, where he purchased 80 acres (32 ha) of land with Bavarian immigrants Georg and Heinrich Vogel from Hof, Bavaria,[3] in 1855 in order to establish a school and church.