Since his death at the age of 90 on November 25 last year, Castro's wishes have been respected. No street, square or building bears his name, and no statue or monument has been erected in his honour.
But Castro remains present in the minds of Cubans, and state media daily recalls his exploits, speeches and writings.
The most important commemoration will be held at nightfall at Havana University, where Castro often delivered his lengthy and fiery speeches.
Raul Castro, the 86 year-old leader who took power when his older brother Fidel became ill in 2006, may make an appearance.
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But the government has scheduled no major events marking the death of Fidel, who governed Cuba for 48 years and died at the age of 90.
Nevertheless signs and slogans painted on walls that read "I am Fidel," "Fidel will always live" and "Fidel is among us" can be seen around the country.
Cuba's two newspapers, the state-run Granma and Juventud Rebelde, dedicated most of their issues to the late communist leader.
Leisi Chi, a 22 year-old history student, recalls the pain she felt upon hearing of Fidel's death.
"It touched us, especially the youth and the people here, even if some people rejoiced," she told AFP.
Fidel Castro "is alive in our thoughts, our culture, our battle of ideas," added elementary school principal Gladys Garcia.
The leftist regimes of Venezuela and Bolivia also held events in memory of the late revolutionary leader.
The anniversary of Fidel Castro's death comes just ahead of the first round of municipal elections which will mark a turning point in Cuban history.
The polls will kick off a series of elections ending in February 2018 with the first top government generational change in 60 years -- the election of Raul Castro's replacement, who will, for the first time, be a post- revolutionary figure.
President since 2008 when he took over from Fidel, 86- year-old Castro said he will not run for re-election.
Born after the revolution, Diaz-Canel would have the tough task of forging the first post-Castro government, consolidating the revolution's gains and executing an economic transition plan.
Raul Castro, however, will remain head of the all- powerful Cuban Communist Party until the next Congress scheduled for 2021 -- when he would be 90 years old.
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