Leach may refer to: Leach (surname) Leach, Oklahoma, an unincorporated community, United States Leach, Tennessee, an unincorporated community, United States Leach Highway, Western Australia Leach orchid Leach phenotype, a mutation in the gene encoding Glycophorin C Low Energy Adaptive Clustering Hierarchy (LEACH), a routing protocol in wireless sensor networks "Leach", a song by Cryptopsy off their album The Unspoken King River Leach, England, United Kingdom Leach Range, a mountain range in Elko County, Nevada Leach (food), jelly-like sweetmeat popular in the 1600s See also Leach field, or septic drain field Leaching (disambiguation) Leech (disambiguation)