Were Martin Luthers 95 thesis written in German or Latin?

Question

...by the way, Happy Reformation Day! Oct 31

Answer 1

Latin.

The first source below gives the original 95 theses as written in Latin (the original title in Latin was "Disputatio pro Declaratione Virtutis Indulgentiarum").

The second source below mentions that "The 95 Theses were quickly translated from Latin into German, printed, and widely copied, making the controversy one of the first in history to be fanned by the printing press."

The third source below gives bibliographic details of Luther's works in Latin, including the 95 Theses.

Answer 2

Latin

Answer 3

Latin

Answer 4

I'd guess Latin since what he did was the common way of beginning a debate at the University.

Answer 5

In the European university (and church) of that time ALL such academic teaching and discussion would take place in Latin, which had the advantage of allowing scholars from all the nations to participate.

Here's the text -
http://www.logosresourcepages.org/History/luther.htm