This is a list of films which have placed number one at the weekend box office in Brazil during 2009 (amounts are in Brazilian reais; 1 real is approximately equivalent to 0.64 US dollars).
| Date | Film | Gross | Notes | |
|---|---|---|---|---|
| 1 | January 4 | Se Eu Fosse Você 2 | R$5,601,375 | |
| 2 | January 11 | R$4,459,870 | ||
| 3 | January 18 | R$3,918,819 | ||
| 4 | January 25 | R$3,144,331 | ||
| 5 | February 1 | R$2,344,941 | ||
| 6 | February 8 | R$1,700,822 | ||
| 7 | February 15 | R$2,425,639 | ||
| 8 | February 22 | R$1,240,654 | ||
| 9 | March 1 | R$1,202,670 | ||
| 10 | March 8 | Slumdog Millionaire | R$2,069,455 | |
| 11 | March 15 | R$1,911,347 | ||
| 12 | March 22 | R$1,275,167 | ||
| 13 | March 29 | R$1,580,413 | ||
| 14 | April 5 | R$4,709,873 | ||
| 15 | April 12 | R$3,343,017 | ||
| 16 | April 19 | R$1,769,585 | ||
| 17 | April 26 | R$1,719,701 | ||
| 18 | May 3 | R$8,541,570 | ||
| 19 | May 10 | R$4,625,830 | ||
| 20 | May 17 | R$7,780,659 | ||
| 21 | May 24 | R$5,277,508 | ||
| 22 | May 31 | R$4,395,871 | ||
| 23 | June 7 | R$4,064,946 | ||
| 24 | June 14 | A Mulher Invisível | R$2,925,000 | A Mulher Invisível reached number-one in its second week of release. |
| 25 | June 21 | R$1,814,922 | ||
| 26 | June 28 | R$4,076,790 | ||
| 27 | July 5 | R$12,147,744 | ||
| 28 | July 12 | R$10.053.514 | ||
| 29 | July 19 | R$9,354,320 | ||
| 30 | July 26 | Ice Age: Dawn of the Dinosaurs | R$5,331,235 | |
| 31 | August 2 | R$3,867,868 | ||
| 32 | August 9 | R$2,005,084 | ||
| 33 | August 16 | R$2,153,306 | ||
| 34 | August 23 | R$1,999,983 | ||
| 35 | August 30 | R$4,016,021 | ||
| 36 | September 6 | R$3,784,959 | ||
| 37 | September 13 | R$2,868,055 | ||
| 38 | September 20 | R$2,269,521 | ||
| 39 | September 27 | R$1,701,884 | ||
| 40 | October 4 | R$2,354,741 | ||
| 41 | October 11 | R$2,213,494 | ||
| 42 | October 18 | R$1,570,552 | ||
| 43 | October 25 | R$1,121,357 | ||
| 44 | November 1 | R$1,933,593 | ||
| 45 | November 8 | R$1,529,152 | ||
| 46 | November 15 | R$9,260,121 | ||
| 47 | November 22 | R$13,191,727 | Highest weekend debut in the year. | |
| 48 | November 29 | R$6,514,827 | ||
| 49 | December 6 | R$4.313.169 | ||
| 50 | December 13 | R$2.653.197 | ||
| 51 | December 20 | R$8.416.116 | ||
| 52 | December 27 | R$8.500.000 |