Gene flow between pig populations has been a recurrent feature of pig evolutionary and breeding history. In particular, introgression between eastern and western pig lineages has played a major role in the formation of modern breeds. Historical hybridization with local wild boars and recent human-mediated crossbreeding between European commercial breeds and Asian indigenous pigs have introduced genomic segments associated with production performance, adaptation, and other complex traits. Such introgressed haplotypes provide important insight into how artificial breeding and population exchange have reshaped the pig genome. Below, we provide a curated collection of introgression-related genomic regions and their functional annotations.