Alwin Kloekhorst (born 1978) is a Dutch linguist, Indo-Europeanist and Hittitologist.
He was appointed a full professor in Anatolian Linguistics at Leiden University in November 2023.
In over 1200 pages, his dissertation describes the history of Hittite in the light of its Indo-European language origin.
One of the dissertation's most important conclusions is the confirmation that the Anatolian languages split from Proto-Indo-European before all other Indo-European branches, which have undergone a period of common innovations (see Indo-Hittite).
The thesis was published in the Leiden-based Indo-European Etymological Dictionary project.