Simon Emil Koedel (1881–1949) was a spy for Nazi Germany in World War II.

[4] He began spying on American shipping for Germany, and in April 1915 headed for England via Holland.

Koedel was then commissioned as a captain in the Germany Army and subsequently returned to the United States.

He often wrote to Congressmen and other highly regarded persons who unwittingly helped him through otherwise closed doors.

Both avoided possible death sentences since their known spying activities happened before the United States entered the war.