Among the wide range of interesting potential applications for nanowires (NWs) of semiconducting oxides, we have focused our attention on the sensing properties of SnO 2 NWs. SnO 2 NWs networks were prepared using evaporation/condensation technique. The morphology, crystalline structure, and composition of nanowires structures were investigated using scanning and transmission electron microscopy, and related energy dispersive X-ray spectroscopy. Conductometric sensors based on SnO 2 NWs were developed and tested for chemical warfare simulants detection, a challenging application to demonstrate the different contribution of the above-mentioned technology to the gas-sensing field. SnO 2 NWs gas sensors were able to detect acetonitrile, dimethyl methyl phosphonate and dipropylene glycol methyl ether at concentrations close or below their Immediately Dangerous for Life and Health (IDHL …