People with the last name Gronau in South Dakota
- Donna Gronau
- Duane Gronau
- Fred Gronau
- Gary Gronau
- Gene Gronau
- Gordon Gronau
- Gracie Gronau
- Greg Gronau
- Gregory Gronau
- Helen Gronau
- Jeff Gronau
- Jeffery Gronau
- Jennie Gronau
- Jerome Gronau
- John Gronau
- Lee Gronau
- Leland Gronau
- Meghan Gronau
- Melba Gronau
- Nikki Gronau
- Rachelle Gronau
- Roger Gronau
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