Nies is a surname. Notable people with the surname include:

• Eric Nies (born 1971), American fashion model and television personality
• Frank J. Nies, American architect
• Franz Xaver Nies (1859–1897), German Catholic missionary
• Helen W. Nies (1925–1996), United States federal judge
• Jack Nies (born 1937), American basketball referee
• John Nies (born 1967), American football player and model
• Susanne Nies, German businesswoman

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