this book constitutes the thoroughly refereed post-proceedings of the 14th international workshop on the implementation of functional languages, ifl 2002, held in madrid, spain in september 2002. the 15 revised full papers presented were carefully selected from 25 submissions during two rounds of reviewing and revision. among the topics addressed are language concepts, type checking, compilation techniques, abstract interpretation, automatic program generation, machine architecture, array processing, concurrent and parallel programming and program execution, heap management, runtime profiling and performance measurement, debugging and tracing, verification of functional programs, and tools and programming techniques.