France, much of Europe and further afield fell silent for a minute at midday Central European Time on Monday in memory of the victims of the Paris shootings.
President Hollande and French Prime Minister Manuel Valls attended the service at the Sorbonne.
Hundreds of people gathered at the Place de la Republique in the the capital and there were similar scenes across the country
There were also tributes too at the two restaurants where the gunmen opened fire on Friday night, Le Carillon and Le Petit Cambodge.
NATO headquarters also fell silent and flags flew at half-mast.
World leaders at the G20 summit in Turkey also took part.
France was represented at the meeting by the Foreign Minister, Laurent Fabius.