This book constitutes the thoroughly refereed proceedings of the 8th International Workshop on Computational Processing of the Portuguese Language, PROPOR 2010, held in Portp Alegre, Brazil, in April 2010.The 21 revised full papers and 8 revised short papers presented were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on information handling, text processing, language processing, language resources, speech recognition, and speech synthesis.