Background: In teeth with substantial hard tissue loss resulting from cavities or trauma, posts are often necessary for providing sufficient retention for the core material. Hence; the present study was undertaken for assessing and comparing the fracture resistance of Carbon fiber post and ceramic post in endodontically treated teeth. Materials & methods: A total of 50 freshly extracted maxillary second premolars were included. Deformed, carious and decayed tooth were excluded. Using lateral condensation technique, biomechanical preparation was done in all the samples. This was followed by commencement of obturation using gutta-percha points. After finishing of the endodontic therapy, all the specimens were sectioned from the cement-enamel junction. Post space preparation was done in all the specimens. After post space preparation, all the specimens were divided into two study groups as follows: Carbon fiber post group: 25 specimens in which carbon fiber post was inserted, and Ceramic post group: 25 specimens in which ceramic post was inserted. Cementation of the posts was done using adhesive resins. After cementation, all the posts were placed in universal force testing machine for testing fracture strength. Results: Mean force required for fracturing specimens of carbon fiber post group was found to be 464.8 N while mean force required for fracturing specimens of ceramic post was found to be 387.9 N respectively. While comparing statistically, significant results were obtained. Conclusion: Carbon fiber posts are more resistant to fractures in comparison to ceramic posts. Key words: Carbon, Ceramic