Hollande has designated his personal representative for Latin America Jean-Pierre Bel, a former president of the French Senate, to represent him at commemorations for Castro, a statement from the Elysée presidential palace said.
Bel was to arrive in Havana on Tuesday in time for a ceremony to which foreign heads of state and diplomats had been invited.Environment Minister Ségolène Royal was to arrive on Sunday, when Castro's ashes will be laid to rest in the Santa Ifigeria de Santiago de Cuba cemetery, home to the grave of independence hero Jose Marti.
Castro's death has posed a diplomatic problem to many leaders of Western countries that opposed the revolution he led and later criticised his government for its record on human rights and press freedom.
Obama, Trudeau absent
Neither US President Barack Obama, who oversaw a thaw in relations with Havana, not Canadian Prime Minister Justin Trudeau will attend ceremonies.
Hollande is to visit the United Arab Emirates on Thursday and Friday for an international conference on threats to international heritage, notably from terrorism.
French Foreign Affairs Minister Jean-Marc Ayrault was unable to attend the official Cuban ceremony because he was in Minsk for a meeting on Ukraine, officials said.