This volume contains the proceedings of the Sixth Fuji International Sym- sium on Functional and Logic Programming (FLOPS 2002), held in Aizu, Japan, September 15-17, 2002, hosted by the University of Aizu, and colocated with the First Asian Symposium on Partial Evaluation Semantics-Based Program Manipulation (ASIA-PEPM 2002), which was held on September 12-14. FLOPS is a forum for research on all issues concerning functional progr- ming and logic programming. In particular, it aims to stimulate the cro- fertilization as well as the integration of the two paradigms. The previous FLOPS meetings took place in Fuji-Susono (1995), Shonan (1996), Kyoto (1998), Tsukuba (1999), and Tokyo (2001). The proceedings of FLOPS '99 and FLOPS 2001 were published by Springer-Verlag as Lecture Notes in Computer Science, Vols. 1722 and 2024, respectively. There were 27 submissions, and these came from Australia (1), Brazil (1), 1 China (1), Denmark (2), Germany (1 ), Italy (1), Japan (6), Korea (1), Por- 2 2 1 1 tugal (2), Russia ( ), Spain (6), Sweden (1), the UK (2 ), and the USA ( ).