João Vieira

João Vieira may refer to:

• João Bernardo Vieira (1939-2009), Guinea-Bissau general and president
• João Vieira (athlete) (born 1976), Portuguese race walker
• João Vieira Pinto, Portuguese footballer
• João Vieira (island), an island of the Bijagós archipelago (Guinea-Bissau)
• João Vieira, singer of the band X-Wife