@#We report two confirmed human bite cases by Lactrodectus geometricus, also known as the brown widowspider. These are the first reported bite envenomation incidents by L. geometricus in Malaysia. The incidents occurred in Tawau, Sabah and Paka, Terengganu. Both men were bitten on their ear while putting on motorcyclehelmets. The spiders appeared to have nested in the helmets. The dead specimens were collected and sent to the Invertebrate and VertebrateNeurobiologyLaboratory, Department of Parasitology, Universiti Malaya for identification. The species identity was confirmed by DNA barcoding.