Rustam Baraq Noor, Habitat’s biodiversity of endemic and exotic fruit trees in Samboja District Kutai Kartanegara Regency. Endemic and Exotic fruit biodiversity studied was situated in Salok Api Darat Village and Amborawang Laut Village Samboja District. This research aimed to identify the biodiversity and adaptation capabilities. The execution was in July 2015 to December 2016. The data was collected using survey, exploration, field observation and an interview for the plantation’s owner. Fruit species in the habitat of Samboja shore studied were 54 species and what was found in the field was 39 species endemic fruit trees and 21 exotic fruit trees. Species of endemic fruit trees were Durio zibethinus, Mangifera odorata, Durio kutejensis, Lansium domesticum, Nephelium lappaceum, Mangifera kemanga, Artocarpus champaden, and eksotik namely Artocarpus integra, Artocarpus altilis. Adaptation capabilities on the new habitat for Mangifera indica exotic fruit tree, it was fond that the grafting was prone to stem drill pest. The findings of the research showed that habitat biodiversity of fruit plants growing around the field and plantation were dominated by fruit which were generatively multiplied had the morphological and generative advantages which made them able to live more than 50 years. The conclusion was Habitat’s biodiversity of fruit in Samboja District was dominated by endemic fruit by 72.22 (%) percent. Fruit cultivation was recommending using the seeds from quality fruit trees.