Maynard Smith may refer to:

As surname

• John Maynard Smith (1920?2004), British evolutionary geneticist
• Julian Maynard Smith, his son, performance artist and co-founder of the London-based performance company Station House Opera
• Ralph Maynard Smith, (1904?1964) architect

As full name

• Maynard Harrison Smith (1911?1984), US recipient of the Medal of Honor