Steve, Steven or Stephen Arnold may refer to:

• Steve Arnold (racing driver) (born 1971), British race car driver
• Steve Arnold (footballer, born 1951), English former footballer
• Steve Arnold (footballer, born 1989), English footballer
• Steve Arnold (venture capitalist), American biotechnology investor and co-founder of Polaris Partners
• Stephen Arnold (composer), American jingle writer
  • Stephen Arnold Music, a Dallas-based music production company
• Stephen Arnold (scientist), professor at the Polytechnic Institute of New York University
• Steven Arnold (born 1974), English actor
• Steven F. Arnold (1943–1994), American artist
• Steven L. Arnold (born 1940), U.S. Army lieutenant general