|Born||March 26, 1977|
|Event||4 × 100m relay|
Viana represented Brazil at the 2008 Summer Olympics in Beijing. He competed at the 100 metres sprint and placed 6th in his heat without advancing to the second round. He ran the distance in a time of 10.60 seconds. Together with José Carlos Moreira, Vicente de Lima and Bruno de Barros he also competed at the 4x100 metres relay. In their qualification heat they placed fourth behind Trinidad and Tobago, Japan and the Netherlands. Their time of 39.01 was the seventh out of sixteen participating nations in the first round and they qualified for the final. There they sprinted to a time of 38.24 seconds, the fourth time after the Jamaican, Trinidad and Japanese teams. He also took part in the 200 metres individual, finishing fourth in his first round heat, with a time of 20.84 seconds. With 21.07 seconds in the second round he only placed seventh in his heat, which was not enough to qualify for the semi-finals.
At the 2012 Summer Olympics, he again competed in the 200 metres and the men's 4 × 100 m relay. He did not reach beyond the heats in the 200 m and the Brazilian men's 4 × 100 m team missed out on the final by 0.06 of a second.
Viana would retroactively be awarded the bronze medal for the 4 × 100 metres relay at the 2008 Summer Olympics following the demotion in 2017 of the Jamaican team for Nesta Carter's failed anti-doping test.
|2005||Universiade||Izmir, Turkey||3rd||100 m||10.49|
|12th (h)||4 × 100 m relay||41.01|
|2007||South American Championships||São Paulo, Brazil||1st||200 m||20.54|
|1st||4 × 100 m relay||38.77|
|Pan American Games||Rio de Janeiro, Brazil||7th (sf)||200 m||20.82|
|1st||4 × 100 m relay||38.81|
|World Championships||Osaka, Japan||35th (h)||100 m||10.46|
|18th (qf)||200 m||20.68|
|4th||4 × 100 m relay||37.99|
|2008||Ibero-American Championships||Iquique, Chile||1st||200 m||20.87|
|1st||4 × 100 m relay||38.96|
|Olympic Games||Beijing, China||50th (h)||100 m||10.60|
|30th (qf)||200 m||21.07|
|3rd||4 × 100 m relay||38.24|
|2009||Ibero-American Championships||Berlin, Germany||38th (h)||200 m||21.18|
|7th||4 × 100 m relay||38.56|
|2010||Ibero-American Championships||San Fernando, Spain||8th (h)||100 m||10.55|
|2011||South American Championships||Buenos Aires, Argentina||3rd||100 m||10.44|
|1st||4 × 100 m relay||39.87|
|Pan American Games||Guadalajara, Mexico||12th (sf)||100 m||10.49|
|1st||4 × 100 m relay||38.18|
|2012||Ibero-American Championships||Barquisimeto, Venezuela||2nd||100 m||10.42|
|1st||4 × 100 m relay||38.95|
|Olympic Games||London, United Kingdom||43rd (sf)||200 m||21.05|
|10th (h)||4 × 100 m relay||38.35|
- "Athlete biography: Sandro Viana". Beijing2008.cn. The Beijing Organizing Committee for the Games of the XXIX Olympiad. Archived from the original on 2008-09-09. Retrieved Aug 26, 2008.
- "London 2012 - Men's 200 m". www.olympic.org. IOC. Retrieved 25 September 2014.
- "London 2012 - Men's 4 x 100 m relay". www.olympic.org. IOC. Retrieved 25 September 2014.
- "Usain Bolt loses one Olympic gold medal as Nesta Carter tests positive". BBC News. 25 January 2017. Retrieved 25 January 2017.