The St. Mathias Cemetery, Wrought-Iron Cross Site is a historic site near Orrin, North Dakota, United States, that was listed on the National Register of Historic Places in 1989.

It is a site of wrought-iron crosses and includes work by blacksmith Joseph P. Klein and by blacksmith John Krim.

The NRHP listing included 42 contributing objects.

[1] Joseph P. Klein and John Krim were both of Pierce County.

They were among a number of "German-Russian blacksmiths in central North Dakota" who developed individual styles in their crosses and whose "work was known for miles around them.