Kristján Árnason is the author of several major works on Icelandic language, including a two-volume work on Icelandic linguistics, published in 1980 and a handbook of Icelandic phonology, published in 2005. His publications in English include Quantity in Historical Phonology: Icelandic and Related Cases (CUP 1980), The Rhythm of Dróttkvaett and other Old Icelandic Metres (University of Iceland 1991), as well as articles in journals such as Journal of Linguistics, Nordic Journal Linguistics, Journal of Germanic Linguistics and Lingua.