Daniel Simmons may refer to:

• Dan Simmons (1948–2026), novelist
• Chief Yowlachie (1890–1966), Yakima Indian actor born Daniel Simmons
• Daniel ‘Danny’ Simmons Jr (born 1953), poet and illustrator
• Daniel 'Diggy' Simmons III, hip-hop singer (b. 1995)
• Daniel A. Simmons, author of self-psychology texts
• Daniel L. Simmons, chemist at Brigham Young University
• Daniel Simmons, murder victim in the Charleston church shooting