Museveni, one of Africa's longest serving leaders, won the polls by 68.38 percent of the vote. The opposition has described the election as a "sham."
Museveni, the ruling National Resistance Movement (NRM) candidate who was seeking a fourth re-election, has ruled the East African country since 1986.
The recent opinion polls had predicted that Museveni will win the elections with over 60 percent. In 1996, he received about 75 percent of the vote, but fell to 65 percent in 2001 and 59 percent in 2006.
Museveni's longest rival and former ally Kizza Besigye came second with 26.01 percent of the vote. This was the third time Besigye was standing against Museveni.
He challenged Museveni in 2001 and 2006 but lost both to the latter.