| Election Name: | 2006 São Paulo gubernatorial election |
| Country: | São Paulo |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2002 São Paulo gubernatorial election |
| Previous Year: | 2002 |
| Next Election: | 2010 São Paulo gubernatorial election |
| Next Year: | 2010 |
| Nominee1: | José Serra |
| Party1: | Brazilian Social Democratic Party |
| Running Mate1: | Alberto Goldman |
| Popular Vote1: | 12,381,038 |
| Percentage1: | 57.93% |
| Nominee2: | Aloizio Mercadante |
| Party2: | Workers' Party (Brazil) |
| Running Mate2: | Nádia Campeão |
| Popular Vote2: | 6,771,582 |
| Percentage2: | 31.68% |
| Map Size: | 250px |
| Governor | |
| Before Election: | Claudio Lembo |
| Before Party: | Liberal Front Party |
| After Election: | José Serra |
| After Party: | Brazilian Social Democratic Party |
| Election Name: | 2006 São Paulo gubernatorial election |
| Country: | São Paulo |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2002 São Paulo gubernatorial election |
| Previous Year: | 2002 |
| Next Election: | 2010 São Paulo gubernatorial election |
| Next Year: | 2010 |
| Nominee1: | Eduardo Suplicy |
| Party1: | Workers' Party (Brazil) |
| Popular Vote1: | 8,986,803 |
| Percentage1: | 47.82% |
| Nominee2: | Afif Domingos |
| Party2: | Liberal Front Party |
| Popular Vote2: | 8,212,177 |
| Percentage2: | 43.70% |
| Map Size: | 250px |
| Senator | |
| Before Election: | Eduardo Suplicy |
| Before Party: | Workers' Party (Brazil) |
| After Election: | Eduardo Suplicy |
| After Party: | Workers' Party (Brazil) |
The São Paulo state elections of 2006 was held along with Brazilian general elections, on October 1 and on October 29, 2006. Since 1994, as a result of a constitutional amendment which reduced the presidential term to four years, all federal and state elections in Brazil have coincided. The state elections decide Governors and the state deputies for the Legislative Assemblies. Also, the members of the National Congress are elected by state.
In general, the rules of the presidential ballot also apply to the gubernatorial one. That is, the ballot is taken in two rounds, if no one reaches at least an absolute majority of the valid votes, a second round between the two most voted candidates will be held. All the candidates holding executive posts had to renounce till April 2, 2006 in order to be able to run.
The candidates for Governor of São Paulo were, in no particular order: