Carbon (C) content in stem, branches, leaves and bark from 16 tree species of the native forest in Chile was determined. The mean contents of organic C by species varied between 34.9% and 48.3% and the single mean was 43,7í0.16%. The total C content was 5,5í0.76% higher than the organic C content. Significant differences between groups of species and tree tissues were found. For all the species the stem’s C contents (44,4í0.16%) were slightly higher than those in woody branches, leaves and bark (43,5í0.21%). The highest C content was for Saxegothaea conspicua with 47,8í0.38% and the lowest for Weinmannia trichosperma, 42,6í0.54%. Through analysis of variance, the study didn’t show significant differences between deciduous species and evergreen species and forest type as it did for native coniferous and broadleaf.