Jean-Henri Izamo (died January 1966) was the head of the gendarmerie of the Central African Republic. He was killed following the Saint-Sylvestre coup d'état.
Central African Republic President David Dacko, Jean-Bédel Bokassa's cousin, took over the country in 1960, and Bokassa, a military officer in the French army, joined the CAR army in 1962. By 1965, the country was in turmoil—plagued by corruption and slow economic growth, while its borders were breached by rebels from neighboring countries. Dacko obtained financial aid from the communist People's Republic of China, but despite this support, the country's problems persisted. Bokassa made plans to take over the government; Dacko became aware of this, and countered by forming the gendarmerie headed by Izamo of the Sara ethnic group, who quickly became Dacko's closest adviser.
Tensions between Dacko and Bokassa increased. In December, Dacko approved a budget increase for Izamo's gendarmerie, but rejected the budget proposal for Bokassa's army. At this point, Bokassa told friends he was annoyed by Dacko's treatment and was "going for a coup d'état". Dacko planned to replace Bokassa with Izamo as his personal military adviser, and wanted to promote army officers loyal to the government, while demoting Bokassa and his close associates. Bokassa realized he had to act against Dacko quickly, and worried that his 500-man army would be no match for the gendarmerie and the presidential guard. He was also concerned the French would intervene to aid Dacko, as had occurred after the 23 February 1964 coup d'état in Gabon against President Léon M'ba. After receiving word of the coup from the country's military chief of staff, Omar Bongo, officials in Paris sent paratroopers to Gabon in a matter of hours and M'ba was quickly restored to power.