Denis Smith

• Denis Smith (English cricketer), played Test cricket for England
• Denis Smith (footballer, born 1947), English football player and manager
• Denis Smith (footballer, born 1932), English football player
• Denis Smith (West Indian cricketer), West Indian cricketer from Grenada
• Denis Mack Smith, English historian

Fictional characters

• Denis Nayland Smith, introduced in the series of novels Dr. Fu Manchu by English author Sax Rohmer