Komodo dragons (Varanus komodoensis) are not found in Madagascar. They are endemic to a few Indonesian islands: Komodo, Rinca, Flores, and Gili Motang.
Madagascar, isolated off Africa's east coast for 88 million years, hosts extraordinary endemic wildlife: lemurs, fossas, chameleons, tenrecs, and hundreds of unique reptiles and amphibians—but no monitor lizards of the Komodo's size.
Both are tropical islands with remarkable reptiles, but their evolutionary histories are entirely distinct. Madagascar's large predators were historically crocodiles and the fossa; Indonesia's included the Komodo dragon.