The Jamamadi are among the little known indigenous peoples of the region of the Juruá and Purús rivers who survived the two rubber booms in the mid-19th Century. In the 1960s, it was predicted that they would disappear as a differentiated group, but from that time on, the Jamamadi have succeeded in recovering, both in demographic and in cultural terms. This entry presents the scattered information that we have available about this group.