Family name Rennich (Rennich 
) , all around the world, is a rare surname. The surname Rennich is characteristic of Israel, where it is a rare surname, Romania, and Croatia. Measured by absolute frequency, this name is the most popular in the United States, Germany, and Romania.
| VARIANT | COUNTRY |
|---|---|
| Rennich | Romania, Germany, Canada, United States, Israel |
| mark rennich researcher |
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